Tim Brunson DCH

Welcome to The International Hypnosis Research Institute Web site. Our intention is to provide quality information to clinicians and the general public concerning hypnosis, hypnotherapy, and other mind/body modalities. We intend to expand our coverage to include such topics as Neuro-Linguistic Programming (NLP), energy psychology and medicine, and other related topics. While our intention is to provide quality information derived from valid sources, including peer reviewed literature concerning significant research, this site is not presented as a source of medical or psychological advice. Clinicians wishing to expand their scope of practice or protocols based upon presented information should perform due diligence prior to use. It is our sincere hope to stimulate interest in these topics and to contribute to the evolution of the science of hypnosis. -- Tim Brunson, PhD

Effects of interviewer behavior on accuracy of children's responses.

Previous research has shown that certain interviewer behaviors can evoke inaccurate answers by children. In the current study, we examined the effects of approving and disapproving statements on the accuracy of 3 children's answers to questions in an interview (Experiment 1). We then evaluated 3 questioning techniques that may be used by interviewers during a forensic interview in which a child provides eyewitness testimony (Experiment 2). All participants responded with more inaccurate answers when approving statements followed inaccurate information and disapproving statements followed accurate information in Experiment 1. During Experiment 2, 1 participant responded most inaccurately when she was requestioned after providing an initial answer, whereas the remaining 2 participants responded most inaccurately when the interviewer provided cowitness information and suggestive questions.

J Appl Behav Anal. 2011 Fall;44(3):587-92. Sparling J, Wilder DA, Kondash J, Boyle M, Compton M. Florida Institute of Technology, School of Psychology, Melbourne, Florida 32901, USA. sparlinj@fit.edu

What People Believe about How Memory Works: A Representative Survey of the U.S. Population.

INCORRECT BELIEFS ABOUT THE PROPERTIES OF MEMORY HAVE BROAD IMPLICATIONS: The media conflate normal forgetting and inadvertent memory distortion with intentional deceit, juries issue verdicts based on flawed intuitions about the accuracy and confidence of testimony, and students misunderstand the role of memory in learning. We conducted a large representative telephone survey of the U.S. population to assess common beliefs about the properties of memory. Substantial numbers of respondents agreed with propositions that conflict with expert consensus: Amnesia results in the inability to remember one's own identity (83% of respondents agreed), unexpected objects generally grab attention (78%), memory works like a video camera (63%), memory can be enhanced through hypnosis (55%), memory is permanent (48%), and the testimony of a single confident eyewitness should be enough to convict a criminal defendant (37%). This discrepancy between popular belief and scientific consensus has implications from the classroom to the courtroom.

PLoS One. 2011;6(8):e22757. Simons DJ, Chabris CF. Clin Psychol Rev. 2011 Aug;31(6):1022-31. Epub 2011 Jun 23. Landolt AS, Milling LS. Department of Psychology, Beckman Institute, University of Illinois, Champaign, Illinois, United States of America.

The effects of encoding in hypnosis and post-hypnotic suggestion on academic performance.

This study examined the relationship between proactive learning in hypnosis, post-hypnotic suggestion, and academic performance. Participants (N = 56) were randomly assigned to a control group or a treatment group. The treatment group was hypnotized and read a passage while in hypnosis. Concurrently, they were given a post-hypnotic suggestion, which attempted to aid recognition and performance on a test immediately following the hypnosis session. Both groups completed a multiple-choice test based on the aforementioned passage. An analysis of covariance discerned the effect of proactive learning and post-hypnotic suggestion on test performance, while controlling for the variance introduced by scholastic aptitude as measured by the ACT. Results indicated that the hypnosis sessions predicted significantly impaired test performance.

Am J Clin Hypn. 2011 Apr;53(4):247-54. Jacobson N, Kramer S, Tharp A, Costa S, Hawley P. Truman State Universit, USA. njacobson88@gmail.com

Enhancing witness memory with techniques derived from hypnotic investigative interviewing.

Full title: Enhancing witness memory with techniques derived from hypnotic investigative interviewing: focused meditation, eye-closure, and context reinstatement.

Due to several well-documented problems, hypnosis as a forensic interviewing tool has been largely replaced by the cognitive interview; however, the latter is problematic in time and complexity. This article builds on previous research showing that some procedures used in traditional hypnotic forensic interviewing might still be useful in developing alternative procedures for use in investigative interviewing. Two experiments are described that include a focused meditation with eye-closure technique with similarities to conventional hypnotic induction but without the label of hypnosis. In the first, focused meditation was comparable to a context reinstatement, or revivification, technique in facilitating memory in children aged 6 to 7 without increasing errors or inflating confidence. In the second, when used in combination with context reinstatement, focused meditation was resistant to the effects of misleading information in adults. Implications are discussed.

Int J Clin Exp Hypn. 2011 Apr;59(2):146-64. Wagstaff GF, Wheatcroft JM, Caddick AM, Kirby LJ, Lamont E. University of Liverpool, United Kingdom.

People who expect to enter psychotherapy are prone to believing...

FULL TITLE: People who expect to enter psychotherapy are prone to believing that they have forgotten memories of childhood trauma and abuse.

We asked 1004 undergraduates to estimate both the probability that they would enter therapy and the probability that they experienced but could not remember incidents of potentially life-threatening childhood traumas or physical and sexual abuse. We found a linear relation between the expectation of entering therapy and the belief that one had, but cannot now remember, childhood trauma and abuse. Thus individuals who are prone to seek psychotherapy are also prone to accept a suggested memory of childhood trauma or abuse as fitting their expectations. In multiple regressions predicting the probability of forgotten memories of childhood traumas and abuse, the expectation of entering therapy remained as a substantial predictor when self-report measures of mood, anxiety, post-traumatic stress disorder symptom severity, and trauma exposure were included.

Memory. 2010 Jul;18(5):556-62. Rubin DC, Boals A. Duke University, Durham, NC, USA. david.rubin@duke.edu

Social processes affecting the mnemonic consequences of rumors on children's...

FULL TITLE: Social processes affecting the mnemonic consequences of rumors on children's memory.

This research examined whether the impact of overheard rumors on children's memory for their experiences varies as a function of social processes. The results of two experiments revealed that the very same errant rumor had different consequences for children's recollections depending on the degree and type of social interactions they had with peers after exposure to the rumor. In both experiments, 3- to 5-year-olds overheard a false rumor about a recently experienced event and then were interviewed about the event 1 week later. In Experiment 1, children were more likely to report experiencing rumored-but-nonoccurring information if they were allowed to interact naturally with peers following exposure to the rumor than if they were prevented from peer exchange. In Experiment 2, exposure to the rumor induced greater memory contamination if it was planted among familiar peers than if it was encountered among strangers.

J Exp Child Psychol. 2010 Dec;107(4):479-93. Epub 2010 Jul 24. Principe GF, Daley L, Kauth K. Department of Psychology, Ursinus College, Collegeville, PA 19426, USA. gprincipe@ursinus.edu

The ups and downs of memory.

Ever since the classic work of Ebbinghaus (1885/1964), the default view in scientific psychology has been that memory declines over time. Less well-known clinical and laboratory traditions suggest, however, that memory can also increase over time. Ballard (1913) demonstrated that, actually, memory simultaneously increases and decreases over time and thus has not 1 but 2 tendencies. When more than 1 recall test is administered, a later test invariably shows loss of some items remembered earlier (oblivescence), but later tests also invariably show that previously unremembered items are recovered in later tests (reminiscence). Depending on a number of factors (e.g., the stimulus used), the overall balance between reminiscence and oblivescence may be positive (hypermnesia) or negative (amnesia). Modern multitrial recall studies have extensively documented hypermnesic memory in single laboratory sessions and, also, although less frequently, over periods of days, weeks, and even months. With hypermnesic memory now established, hypnosis has been shown not to add anything to regular hypermnesia. This article presents an integration of the scattered literatures, which now, after a century of experimental and clinical effort, coheres into a solid empirical picture, with numerous implications (e.g., for the recovered memory controversy, eyewitness testimony, repression, and subliminal perception).

Am Psychol. 2010 Oct;65(7):623-33. Erdelyi MH. Department of Psychology, Brooklyn College, Brooklyn, NY 11210-2889, USA. iyledre@comcast.net

Extreme cognitive interviewing: a blueprint for false memories through imagination inflation.

This article examines a 3-decades-old unsolved homicide, where the victim's 4-year-and-9-month-old daughter was deemed the only eyewitness (State of Nebraska v. Donald J. Sykora, 2008). The authors critique the investigative methods employed over 33 years, with particular emphasis on the final "extreme" cognitive interview of the daughter, which persisted for days and incorporated various imaginative techniques. Adverse circumstances pervade the case: (a) the young age of the presumed witness when the murder occurred; (b) the vulnerability of memory to suggestion and revision over time; (c) the possible earlier use of hypnosis to refresh recall; and (d) implementing a poorly documented, 31-hour cognitive interview that encouraged repetition and fantasy. In this case, the prolonged cognitive interview is perilously hypnotic-like, yielding evidence that must be regarded as a product of imagination inflation--defective for sustaining veridical testimony.

Int J Clin Exp Hypn. 2010 Jul;58(3):269-87. Whitehouse WG, Orne EC, Dinges DF. Department of Psychology, Temple University, Philadelphia, PA 19122, USA. wayne.whitehouse@temple.edu

On telling the whole story

Full Title: On telling the whole story: facts and interpretations in autobiographical memory narratives from childhood through midadolescence.

This article examines age differences from childhood through middle adolescence in the extent to which children include factual and interpretive information in constructing autobiographical memory narratives. Factual information is defined as observable or perceptible information available to all individuals who experience a given event, while interpretive information is defined as information that articulates the desires, emotions, beliefs, and thoughts of the participant and other individuals who experience an event. Developmental research suggests that the latter type of information should become particularly prevalent in later adolescence, while the former should be abundantly evident by age 8. Across 2 studies, we found evidence for strong increases in interpretive information during adolescence, but not before. These increases were evident across different types of events, and across different subtypes of interpretive content. The results are discussed in terms of their implications for the development of autobiographical memory in childhood and adolescence.

Dev Psychol. 2010 May;46(3):735-46. Pasupathi M, Wainryb C. Department of Psychology, University of Utah, Salt Lake City, UT 84112, USA. pasupath@psych.utah.edu

Memory focused interventions (MFI) as a therapeutic strategy in hypnotic psychotherapy.

The prospect of utilizing memory plasticity (the constructive and transitory nature of memory) for therapeutic purposes has not been widely recognized. However, a number of theoretical and clinical venues throughout the last century have shown its potential application. Intensive research conducted during these last decades, pointed out the possibility of influencing human memory in relation to new memories and their specific components. Moreover, the research showed the feasibility of planting alternative early childhood memories and thus altering memories of personal history. Additionally, researchers found that memory is naturally very fallible due to everyday phenomena of forgetfulness, distortion and intrusion of past and present information. Throughout the course of this paper, the integrative overview of these empirical findings with the aforementioned clinical and theoretical foundations serves as a substratum in an attempt to present an integrative therapeutic approach, named Memory Focused Interventions (MFI).

Am J Clin Hypn. 2010 Jan;52(3):189-203. Meyerson J. Israeli Society of Hypnosis, HypnoClinic, Tel-Aviv, Israel. meyersoj@netvision.net.il

Human figure drawings and children's recall of touching.

In 2 studies, children ages 3 to 7 years were asked to recall a series of touches that occurred during a previous staged event. The recall interview took place 1 week after the event in Study 1 and immediately after the event in Study 2. Each recall interview had 2 sections: In 1 section, children were given human figure drawings (HFDs) and were asked to show where the touching took place; in the other section, the same questions were asked without the HFDs (verbal condition). Children were randomly assigned to 2 different conditions: HFD 1st/verbal 2nd or verbal 1st/HFD 2nd. There were 2 major findings. First, HFDs elicited more errors than the verbal condition when used to probe for information that the child had already been asked. Second, regardless of interview method, children had poor recall of the touches even when these occurred minutes before the interview. It is suggested that cognitive mechanisms involving memory and semantics underlie children's poor recall of touching in both verbal and HFD conditions.

J Exp Psychol Appl. 2009 Dec;15(4):361-74. Bruck M. Division of Child and Adolescent Psychiatry, Johns Hopkins University, Baltimore, MD 21205, USA. mbruck1@jhmi.edu

Memory for actions of an event: older and younger adults compared.

Previous studies have shown increased false memory effects in older compared to younger adults. To investigate this phenomenon in event memory, in the present study, the authors presented younger and older adults with a robbery. A distinction was made between verbal and visual actions of the event, and recognition and subjective experience of retrieval (remember/know/guess judgments) were analyzed. Although there were no differences in hits, older adults accepted more false information as true and, consequently, showed less accurate recognition than younger adults. Moreover, older adults were more likely than younger adults to accompany these errors with remember judgments. Young adults accepted fewer false verbal actions than visual ones and awarded fewer remember judgments to their false alarms for verbal than for visual actions. Older adults, however, did not show this effect of type of information. These results suggest that aging is a relevant factor in memory for real-life eyewitness situations.

J Gen Psychol. 2009 Oct;136(4):428-41. Aizpurua A, Garcia-Bajos E, Migueles M. Psychology Faculty, University of the Basque Country, Avda. Tolosa 70, Donostia-San Sebastian 20.018, Gipuzkoa, Spain. aaizpurua012@ikasle.ehu.es

Reevaluating the potency of the memory conformity effect.

Witnesses sometimes report event details that are acquired solely from another witness. We reevaluated the potency of this memory conformity effect. After viewing a crime video, some participants learned about nonwitnessed details via discussion (dyad group), reading another participant's report (read group), or watching another version of the video (both-video group). In Experiment 1, these participants often reported nonwitnessed details, but on a source-judgment test most details were attributed primarily to the actual source rather than to the video. In addition, the dyad group was not more likely than the read or both-video groups to report nonwitnessed details. Participants in Experiment 2 were explicitly discouraged from providing details that were remembered from the secondary source only. These postwarning instructions substantially reduced the memory conformity effect, and a dyad group was not more likely than a read group to report nonwitnessed details. Encouraging source monitoring at test can reduce the negative consequences of co-witness collaboration.

Bodner GE, Musch E, Azad T. Mem Cognit. 2009 Dec;37(8):1069-76. Department of Psychology, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada. bodner@ucalgary.ca

Children's eyewitness memory for multiple real-life events.

The present research examined the influence of prior knowledge on children's free recall, cued recall, recognition memory, and source memory judgments for a series of similar real-life events. Forty children (5-12 years old) attended 4 thematic birthday parties and were later interviewed about the events that transpired during the parties using the National Institute of Child Health and Human Development protocol. Of the events, half were generic in that they could have occurred at any birthday party, and half were specific to the theme of the party. Older children demonstrated more evidence of using gist-based information to guide their memory performance than did younger children. However, younger children were able to use global gist to inform their source memory judgments, qualifying past word-learning research.

Child Dev. 2009 Nov-Dec;80(6):1877-90. Odegard TN, Cooper CM, Lampinen JM, Reyna VF, Brainerd CJ. Department of Psychology, Box 19528, University of Texas Arlington, Arlington, TX 76019-0528, USA. odegard@uta.edu

Children's suggestion-induced omission errors are not caused by memory erasure.

We explored whether children's suggestion-induced omission errors are caused by memory erasure. Seventy-five children were instructed to remove three pieces of clothing from a puppet. Next, they were confronted with evidence falsely suggesting that one of the items had not been removed. During two subsequent interviews separated by one week, children had to report which pieces of clothing they had removed. Children who during both interviews failed to report that they had removed the pertinent item (i.e., omission error; n=24) completed a choice reaction time task. In this task, they were presented with different clothing items. For each item, children had to indicate whether or not they had removed it. Significantly more errors were made for those removed items that children failed to report than for those they had not removed. This indicates that children's suggestion-based omission errors are not due to erasure of memories.

Conscious Cogn. 2010 Mar;19(1):265-9. Epub 2009 Nov 1. Otgaar H, Meijer EH, Giesbrecht T, Smeets T, Candel I, Merckelbach H. Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, The Netherlands. Henry.Otgaar@maastrichtuniversity.nl

A hypnotic paradigm for studying intrusive memories.

Despite the importance of intrusive memories in clinical disorders, research has been limited by a dearth of paradigms that permit experimental study of intrusions. This study describes a hypnotic paradigm for eliciting intrusive memories. Forty-nine highly hypnotisable participants nominated a distressing memory prior to being hypnotised. During hypnosis, they received the suggestion that they would remember the memory in response to a designated cue after the hypnosis session. Half of the participants also received a posthypnotic amnesia suggestion for the source of the memory. Following hypnosis, all participants completed a cognitive task and during the task received the cue to recall the memory. Results demonstrated that memories experienced after posthypnotic amnesia were experienced as more involuntary and more distressing than those that were knowingly retrieved. Participants in the posthypnotic amnesia condition also demonstrated greater interference on the cognitive task after the retrieval cue was given than those who intentionally retrieved the memory. These findings suggest that posthypnotic suggestion provides a useful paradigm to elicit intrusive memories under experimental conditions.

J Behav Ther Exp Psychiatry. 2010 Dec;41(4):433-7. Hill Z, Hung L, Bryant RA. School of Psychology, University of New South Wales, Sydney, NSW 2052, Australia.

Immediate and persisting effects of misleading questions and hypnosis on memory reports

Immediate and persisting effects of misleading questions and hypnosis on memory reports were assessed. After listening to a story, 52 highly suggestible students and 59 low and medium suggestible students were asked misleading or neutral questions in or out of hypnosis. All participants were then asked neutral questions without hypnosis. Both hypnosis and misleading questions significantly increased memory errors, and misleading questions produced significantly more errors than did hypnosis. The 2 effects were additive, so that misleading questions in hypnosis produced the greatest number of errors. There were no significant interactions with level of hypnotic suggestibility. Implications of these findings for the per se exclusion of posthypnotic testimony are discussed.

J Exp Psychol Appl. 2002 Mar;8(1):26-32. Scoboria A, Mazzoni G, Kirsch I, Milling LS. Department of Psychology, University of Connecticut, USA.

Neuroscientists at Case Western Reserve University store information in isolated brain tissue

WEBWIRE – Monday, December 28, 2009

Study in Nature Neuroscience uncovers possible basis of short-term memory

CLEVELAND - Ben W. Strowbridge, PhD, associate professor of neuroscience and physiology/biophysics, and Phillip Larimer, PhD, a MD/PhD student in the neurosciences graduate program at Case Western Reserve University School of Medicine, are the first to create stimulus-specific sustained activity patterns in brain circuits maintained in vitro.

Their study, entitled, "Representing information in cell assemblies: Persistent activity mediated by semilunar granule cells" will be published in the February 2010 issue of Nature Neuroscience and is currently available online.

Neuroscientists often classify human memory into three types: declarative memory, such as storing facts or remembering specific events; procedural memory, such as learning how to play the piano or shoot basketballs; and working memory, a type of short-term storage like remembering a phone number. With this particular study, Strowbridge and Larimer, were interested in identifying the specific circuits that could be responsible for working memory.

[More]

The influence of instructions and terminology on the accuracy of remember-know judgments

The remember-know paradigm is one of the most widely used procedures to examine the subjective experience associated with memory retrieval. We examined how the terminology and instructions used to describe the experiences of remembering and knowing affected remember-know judgments. In Experiment 1 we found that using neutral terms, i.e., Type A memory and Type B memory, to describe the experiences of remembering and knowing reduced remember false alarms for younger and older adults as compared to using the terms Remember and Know, thereby increasing overall memory accuracy in the neutral terminology condition. In Experiment 2 we found that using what we call source-specific remember-know instructions, which were intended to constrain remember judgments to recollective experiences arising only from the study context, reduced remember hits and false alarms, and increased know hits and false alarms. Based on these data and other considerations, we conclude that researchers should use neutral terminology and source-specific instructions to collect the most accurate reports of the experiences of remembering and knowing arising from the study context.

Conscious Cogn. 2009 Jun;18(2):401-13. Epub 2009 Mar 31. McCabe DP, Geraci LD. Department of Psychology, Colorado State University, Campus Box 1876, Fort Collins, CO 80523-1876, USA.

Are subjective memory problems related to suggestibility, compliance, false memories, ...

Full Title: Are subjective memory problems related to suggestibility, compliance, false memories, and objective memory performance?

The relationship between subjective memory beliefs and suggestibility, compliance, false memories, and objective memory performance was studied in a community sample of young and middle-aged people (N = 142). We hypothesized that people with subjective memory problems would exhibit higher suggestibility and compliance levels and would be more susceptible to false recollections than those who are optimistic about their memory. In addition, we expected a discrepancy between subjective memory judgments and objective memory performance. We found that subjective memory judgments correlated significantly with compliance, with more negative memory judgments accompanying higher levels of compliance. Contrary to our expectation, subjective memory problems did not correlate with suggestibility or false recollections. Furthermore, participants were accurate in estimating their objective memory performance.

Am J Psychol. 2009 Summer;122(2):249-57. Van Bergen S, Jelicic M, Merckelbach H. Department of Clinical Psychological Science, Faculty of Psychology and Neuroscience, Maastricht University, Maastricht, The Netherlands. s.venbergen@psychology.unimaas.nl

Experimental production of past-life memories in hypnosis.

To explore the nature of past-life memories in hypnosis, 64 normal male adults aged 21 to 23 were selected using the Korean version of the Harvard Group Scale of Hypnotic Susceptibility (HGSHS:K) and a simple belief in past-life scale. They all received hypnotic past-life regression 3 times. The influence of HGSHS:K scores on the production rate of past-life memories was statistically significant; however, the influence of belief was not. The percentage of subjects who responded to hypnotic past-life regression increased with hypnotizability. Content analysis showed that cultural background and religious concepts influenced past-life memory production. Animals as past-life identities, for example, were reported whereas all past-life identities were human in a Canadian study.

Int J Clin Exp Hypn. 2009 Jul;57(3):269-78. Pyun YD, Kim YJ. Pyun Neuropsychiatric Clinic, Seoul, South Korea. pyunyd@naver.com

Remembering words not presented in sentences: how study context changes patterns of false memories.

People falsely endorse semantic associates and morpheme rearrangements of studied words at high rates in recognition testing. The coexistence of these results is paradoxical: Models of reading that presume automatic extraction of meaning cannot account for elevated false memory for foils that are related to studied stimuli only by their visual form; models without such a process cannot account for false memory for semantic foils. Here we show how sentence and list study contexts encourage different encoding modes and consequently lead to different patterns of memory errors. Participants studied compound words, such as tailspin and floodgate, as single words or embedded in sentences. We show that sentence contexts led subjects to be better able to discriminate conjunction lures (e.g., tailgate) from old words than did list contexts. Conversely, list contexts led to superior discrimination of semantic lures (e.g., nosedive) from old words than did sentence contexts.

Mem Cognit. 2009 Jan;37(1):52-64. Matzen LE, Benjamin AS. University of Illinois, Urbana-Champaign, Illinois, USA. lematze@sandia.gov

The effects of social influence on children's memory reports

Children in two age groups (7 vs. 12 yrs, N= 174) individually interacted with a stranger and were later interviewed about this event. Right before the interview, each child encountered the stranger once again and he engaged in a conversation where he either suggested that a (central or peripheral) detail originally present in the event had actually not been there or that an originally non-present (central or peripheral) detail had in fact been there. It was hypothesized that the two types of misinformation would result in omission and commission errors respectively. The results showed that the social influence resulted in an asymmetric effect (i.e., more commission than omission errors). Importantly, we also found that the children made more errors with respect to the peripheral detail (a suitcase), compared to the central detail (a passenger). Younger children did not make more errors (neither omission nor commission errors) than older children.

Scand J Psychol. 2008 Dec;49(6):507-13. Hjelmsäter ER, Granhag PA, Strömwall LA, Memon A. Department of Psychology, University of Gothenburg, P.O. Box 500, SE 405 30, Göteborg, Sweden. emma.roos@psy.gu.se

Imagining nice and nasty events in childhood or adulthood

We explored whether event recency and valence affect people's susceptibility to imagination inflation. Using a three-stage procedure, subjects imagined positive and negative events happening in their distant or recent past. First, subjects rated how confident they were that they had experienced particular positive and negative events in childhood or adulthood using a Life Events Inventory (LEI). Two weeks later, they imagined two positive and two negative events from the LEI. Finally, they rated their confidence on the LEI a second time. For positive events, subjects showed more imagination inflation for adulthood than childhood events. For negative events, they showed no difference in imagination inflation for adulthood and childhood events. We discuss factors that may influence source confusions for memories of the past and highlight directions for future research.

Acta Psychol (Amst). 2008 Oct;129(2):228-33. Sharman SJ, Barnier AJ. School of Psychology, University of New South Wales, Sydney, NSW 2052, Australia. s.sharman@unsw.edu.au

Déjà vu in the laboratory.

This experiment aimed to create a laboratory analogue of déjà vu. During hypnosis, 1 group of high hypnotizables completed a puzzle game and then received a posthypnotic amnesia suggestion to forget the game (PHA condition). Another group of highs were not given the game but received a posthypnotic familiarity suggestion that it would feel familiar (PHF condition). After hypnosis, all participants were given the game and described their reactions to it. Whereas 83% of participants in both conditions passed their respective suggestions, more in the PHF condition felt a sense of déjà vu. An EAT inquiry revealed that they experienced sensory fascination and confusion about the source of familiarity, akin to everyday déjà vu. These findings highlight the value of using hypnosis as a laboratory analogue of déjà vu and provide a framework for investigating clinical manifestations of this phenomenon.

Int J Clin Exp Hypn. 2008 Oct;56(4):425-50. O'Connor AR, Barnier AJ, Cox RE. University of Leeds, United Kingdom. aoconnor@wustl.edu

What the stories children tell can tell about their memory.

The authors examined the relation between children's narrative ability, which has been identified as an important contributor to memory development, and suggestibility. Across 2 studies, a total of 112 preschool-aged children witnessed a staged event and were subsequently questioned suggestively. Results from Study 1 indicated that children's ability to provide a high-quality narrative of the event was related to resistance to suggestive questions, and narrative ability appeared to supersede age as a predictor of such resistance. In Study 2, children's general language and narrative abilities were measured in addition to their ability to produce a high-quality narrative about the target event. These results replicated Study 1's findings that children's ability to produce a high-quality narrative of a previously experienced event predicted resistance to suggestion. However, the quality of children's autobiographical memory narratives predicted shifting from denial to assent. Findings are considered in light of narrative's role in memory development and underlying mechanisms that may explain children's suggestibility.

Dev Psychol. 2008 Sep;44(5):1442-56. Kulkofsky S, Klemfuss JZ. Department of Human Development & Family Studies, Texas Tech University, Lubbock, TX 79409, USA. sarah.kulkofsky@ttu.edu

Learning, Motivation, and Male Dopamine Fatigue

by Tim Brunson DCH

Occasionally I'll encounter 40-ish or older male patients who are encountering learning, memory, and motivation problems. During their intake and subsequent discussions I often detect similar patterns. They are individuals who are successful in their professional lives. Yet, they tend to be over controlling workaholics who equate effort with results. I've even heard more than one of them using the phrase "no pain, no gain." Indeed, too often they equate personal sacrifice with results. This leads to an unbalanced life which will eventually affect their effectiveness. In short, trying too hard will lead to ineffectiveness, a loss of control of their temper, and health problems. To merely treat the presenting memory and motivation problem blindly with hypnosis or allopathic remedies would be unfruitful and potentially harmfully.

[More]

You say tomato? Collaborative remembering leads to more false memories for intimate couples.

Research on memory conformity shows that collaborative remembering--typically in the form of discussion--can influence people's memories. One question that remains is whether it matters with whom we discuss our memories. To address this question we compared people's memories for an event after they discussed that event with either their romantic partner or a stranger. Pairs of subjects watched slightly different versions of a movie, and then discussed some details from the movie, but not others. Subjects were better at remembering non-discussed details than discussed details: when remembering discussed details they incorrectly reported information from their partner's version instead of their own. In addition, subjects who discussed the event with their romantic partner (rather than with a stranger) were even more likely to report false memories. We discuss our findings in relation to other research on memory conformity, social influences on false memories, and memory systems within romantic relationships.

Memory. 2008 Apr;16(3):262-73. French L, Garry M, Mori K. Victoria University of Wellington, Wellington, New Zealand.

False recognition following study of semantically related lists presented in jumbled word form.

Three experiments explored a jumbled word effect in false recognition. Lists of theme-related items were presented in word or nonword form. Results indicated that critical lures semantically related to studied items were falsely recognised regardless of whether they were presented as words or nonwords. High false recognition rates to either SLEEP or SELEP following study of an appropriate theme list of items in nonword form should only occur if nonwords are recoded at study. With study conditions conducive to recoding, jumbled words induced false recognitions based on semantic associations among their respective base words. Disrupting a recoding process by creating "difficult" letter rearrangements for jumbled words (Experiment 2) appeared to eliminate the false recognition effect. In Experiment 3, presentation durations ranged from 110 ms to 880 ms. Although there was little evidence of a semantic false recognition effect at the fastest presentation rate, the brief durations appeared to be effective in eliminating the effect when items were studied in nonword form. These results appear to be consistent with an encoding activation/retrieval monitoring model.

Memory. 2008 May;16(4):443-61. Halcomb SH, Taylor JP, DeSouza KD, Wallace WP. Department of Psychology, Rice University, Houston, TX, USA. sara.haber@rice.edu

The child in time: the influence of parent-child discussion about a future experience.

We investigated the influence of preparation provided by parents on preschoolers' recall. One day before children participated in a staged novel event, parents discussed the event with their child either with (verbal+photos) or without (verbal) photographs. Parents and children in a control condition read an unrelated story. Then 8-10 days later the children were interviewed about the event. Children in the verbal+photos condition recalled significantly more than those in the control condition. Parental preparation style (e.g., evaluations, hypothetical language) was associated with the child's contributions to the preparatory discussion, but no aspect of parent or child style or content was associated with children's verbal recall. Similarly, there were no significant associations between children's performance on a task of episodic future thinking, and their preparatory discussion or recall, although episodic future thinking was strongly associated with language ability. The potential underlying mechanisms and theoretical implications are discussed.

Memory. 2008;16(5):485-99. Salmon K, Champion F, Pipe ME, Mewton L, McDonald S. University of New South Wales, Sydney, Australia. Karen.Salmon@vuw.ac.nz

Emotional content of true and false memories.

Many people believe that emotional memories (including those that arise in therapy) are particularly likely to represent true events because of their emotional content. But is emotional content a reliable indicator of memory accuracy? The current research assessed the emotional content of participants' pre-existing (true) and manipulated (false) memories for childhood events. False memories for one of three emotional childhood events were planted using a suggestive manipulation and then compared, along several subjective dimensions, with other participants' true memories. On most emotional dimensions (e.g., how emotional was this event for you?), true and false memories were indistinguishable. On a few measures (e.g., intensity of feelings at the time of the event), true memories were more emotional than false memories in the aggregate, yet true and false memories were equally likely to be rated as uniformly emotional. These results suggest that even substantial emotional content may not reliably indicate memory accuracy.

Memory. 2008;16(5):500-16. Laney C, Loftus EF. University of Leicester, UK. cl136@le.ac.uk

The diagnostic accuracy of questions about past experiences of being mechanically restrained.

Information about stressful life experiences obtained from patients during diagnostic interviews is an important foundation for clinical decision making. In this study self-reports from 115 committed psychiatric patients of experiences of mechanical restraint were compared with medical records. The sensitivity of patient self-reports was 73% (11/15) and the specificity was 92% (92/100). No clear relationship between psychiatric symptoms and reliability of self-reports was identified. The results highlight the subjective qualities of narratives about past experiences.

Memory. 2008;16(5):548-55. Wallsten T, Kjellin L, Sjoberg RL. University of Uppsala, Vasterås, Sweden. tuula.wallsten@ltv.se

Memory for media: investigation of false memories for negatively and positively charged public event

Despite a large body of false memory research, little has addressed the potential influence of an event's emotional content on susceptibility to false recollections. The Paradoxical Negative Emotion (PNE) hypothesis predicts that negative emotion generally facilitates memory but also heightens susceptibility to false memories. Participants were asked whether they could recall 20 "widely publicised" public events (half fictitious) ranging in emotional valence, with or without visual cues. Participants recalled a greater number of true negative events (M=3.31/5) than true positive (M=2.61/5) events. Nearly everyone (95%) came to recall at least one false event (M=2.15 false events recalled). Further, more than twice as many participants recalled any false negative (90%) compared to false positive (41.7%) events. Negative events, in general, were associated with more detailed memories and false negative event memories were more detailed than false positive event memories. Higher dissociation scores were associated with false recollections of negative events, specifically.

Memory. 2008;16(6):658-66. Porter S, Taylor K, Ten Brinke L. Department of Psychology, Dalhousie University, Halifax, NS, Canada. sbporter@dal.ca

Slowing presentation speed increases illusions of knowledge.

Prior research on false memories has shown that suggestibility is often reduced when the presentation rate is slowed enough to allow monitoring. We examined whether slowing presentation speed would reduce factual errors learned from fictional stories. Would subjects use the extra time to detect the errors in the stories, reducing reproduction of these errors on a later test? Surprisingly, slowing presentation speed increased the production of story errors on a later general knowledge test. Instructing the reader to mark whether each sentence contained an error, however, did decrease suggestibility. Readers appear to passively accept information presented in stories and need a constant reminder to monitor for errors. These results highlight differences between typical episodic false memories and illusions of knowledge (such as learning from fiction). Manipulations that reduce suggestibility for episodic false memories do not always reduce suggestibility for illusions of knowledge.

Psychon Bull Rev. 2008 Feb;15(1):180-5. Fazio LK, Marsh EJ. Department of Psychology, Duke University, Durham, North Carolina 27708-0086, USA. lkf@duke.edu

The persistence of false beliefs.

Do false beliefs last? To explore this question, this study planted false beliefs or memories of a childhood experience with asparagus. We found that these false beliefs had consequences for subjects, when assessed directly after the suggestive manipulation. Moreover, subjects were brought back two weeks later to see if their false beliefs persisted. After two weeks, subjects' confidence in their new memories, and the consequences of those memories were diminished, but not extinguished. These false beliefs were found to be somewhat weaker than other subjects' true beliefs for the same events. Another novel finding was that the manipulation was sufficiently powerful to affect actual food choices.

Acta Psychol (Amst). 2008 Sep;129(1):190-7. Laney C, Fowler NB, Nelson KJ, Bernstein DM, Loftus EF. University of California-Irvine, CA, USA. CL136@le.ac.uk

Children's recall of emotionally arousing, repeated events.

The influence, if any, of emotional arousal on memory is a controversial topic in the literature. Much of the research on memory for emotionally arousing events has focused on a few specific issues (e.g., differences in types of details recalled in emotionally arousing and neutral events; increasing ecological validity). Although gaining more recent attention, a neglected area in the literature has been memory for instances of repeated, emotionally arousing events. This issue has important implications for understanding children's ability to recall events in a forensic setting. We review existing findings on memory for emotionally arousing events in general and particularly in children, children's memory for events that occur repeatedly, and then discuss the scarce research on repeated emotionally arousing events and the need for further research in this area. We conclude that although it is clear that children are capable of accurately reporting arousing and repeated experiences, it is also apparent that circumstances both within and outside the control of investigative interviewers influence this ability.

Int J Law Psychiatry. 2008 Aug-Sep;31(4):337-46. Price HL, Connolly DA. Department of Psychology, University of Regina, 3737 Wascana Parkway, Regina, SK, Canada S4S 0A2. Heather.Price@uregina.ca

Truth induction in young maltreated children.

OBJECTIVE: Two studies examined the effects of the oath or reassurance ("truth induction") on 5- to 7-year-old maltreated children's true and false reports of a minor transgression. METHODS: In both studies an interviewer elicited a promise to tell the truth, reassured children that they would not get in trouble for disclosing the transgression, or gave no instructions before questioning the child. In Study 1, children were encouraged to play with an attractive toy by a confederate, who then informed them that they might get in trouble for playing. In Study 2, a confederate engaged children in play, but did not play with the attractive toy. RESULTS: In Study 1, the oath and reassurance increased disclosure among children who would qualify as competent to take the oath. In Study 2 neither the oath nor reassurance increased false reports among children who would qualify as competent, whether yes/no questions or tag questions were asked. Among non-competent children, reassurance (but not the oath) increased false reports. Children were more likely to accuse the confederate of the transgression than to implicate themselves. CONCLUSIONS: The results suggest that a promise to tell the truth may increase true disclosures without increasing false allegations. Reassurance that specifically mentions the target activity also increases true disclosures, but may increase acquiescence among some children. PRACTICE IMPLICATIONS: A child-friendly version of the oath may be a useful addition to child interviews.

Child Abuse Negl. 2008 Jul;32(7):738-48. Epub 2008 Jul 2. Lyon TD, Dorado JS. University of Southern California Gould School of Law, 699 Exposition Blvd., Los Angeles, CA 90089-0071, USA.

Memory on the beach: an Australian memory (and hypnosis) laboratory.

The memory (and hypnosis) lab at the University of New South Wales investigates a broad range of memory topics. We try to find innovative methods from cognitive and clinical psychology to address theoretical and empirical questions about memory. We aso use hypnosis as one major methodological tool in our investigations of memory (as well as other cognitive processes). In this paper, we review the projects currently underway in our memory (and hypnosis) lab.

Cogn Process. 2005 Dec;6(4):272-81. Epub 2005 Aug 26. Barnier AJ, Bryant RA, Campbell L, Cox R, Harris C, Hung L, Maccallum F, Sharman SJ. School of Psychology, University of New South Wales, Sydney, NSW 2052, Australia, A.Barnier@unsw.edu.au.

The future orientation of constructive memory.

We explore a new distinction between the future, prospective memory system being investigated in current neuroscience and the past, retrospective memory system, which was the original theoretical foundation of therapeutic hypnosis, classical psychoanalysis, and psychotherapy. We then generalize a current evolutionary theory of sleep and dreaming, which focuses on the future, prospective memory system, to conceptualize a new evolutionary perspective on therapeutic hypnosis and brief psychotherapy. The implication of current neuroscience research is that activity-dependent gene expression and brain plasticity are the psychobiological basis of adaptive behavior, consciousness, and creativity in everyday life as well as psychotherapy. We summarize a case illustrating how this evolutionary perspective can be used to quickly resolve problems with past obstructive procrastination in school to facilitate current and future academic success.

Am J Clin Hypn. 2008 Apr;50(4):343-50. Rossi E, Erickson-Klein R, Rossi K. Ernest@ErnestRossi.com

True and false recall and dissociation among maltreated children: the role of self-schema.

The current investigation addresses the manner through which trauma affects basic memory and self-system processes. True and false recall for self-referent stimuli were assessed in conjunction with dissociative symptomatology among abused (N=76), neglected (N=92), and nonmaltreated (N=116) school-aged children. Abused, neglected, and nonmaltreated children did not differ in the level of processing self-schema effect or in the occurrence and frequency of false recall. Rather, differences in the affective valence of false recall emerged as a function of maltreatment subtype and age. Regarding dissociation, the abused children displayed higher levels of dissociative symptomatology than did the nonmaltreated children. Although abused, neglected, and nonmaltreated children did not exhibit differences in the valence of their self-schemas, positive and negative self-schemas were related to self-integration differently among the subgroups of maltreatment. Negative self-schemas were associated with increased dissociation among the abused children, whereas positive self-schemas were related to increased dissociation for the neglected children. Thus, positive self-schemas displayed by the younger neglected children were related to higher dissociation, suggestive of defensive self-processing. Implications for clinical intervention are underscored.

Dev Psychopathol. 2008 Winter;20(1):213-32. Valentino K, Cicchetti D, Rogosch FA, Toth SL. University of Rochester, USA. kristin.valentino@yale.edu

More Entries

© 2000 - 2012The International Hypnosis Research Institute, All Rights Reserved.

Contact