Ira E. Hyman

Individual Differences and the Creation of False Childhood Memories

We investigated if college students will create false childhood memories, the role of self-knowledge in memory creation, and if there are reliable individual differences related to memory creation. Based on information obtained from parents, we asked college students about several true childhood experiences. We also asked each student about one false event and presented the false event as if it was based on parent information. We asked the students to describe all events in two interviews separated by one day. When participants could not recall an event (whether true or false), we encouraged them to think about related self-knowledge and to try to imagine the event. In an unrelated experimental session, the students were administered four cognitive/personality scales: the Creative Imagination Scale (CIS), the Tellegen Absorption Scale (TAS), the Dissociative Experiences Scale (DES), and the Marlowe-Crowne Social Desirability Scale (SDS). We found that approximately 25% of the students created false childhood memories. Participants who made connections to related self-knowledge in the first interview were more likely to create false memories. We also found that the CIS and the DES were positively related to memory creation. Factors that decrease ones ability to engage in reality monitoring are related to the acceptance of false events and the creation of false memories.

Errors in autobiographical memory

Memory is always constructive. People create the past based on the information that remains in memory, their general knowledge, and the social demands of the retrieval situation. Thus, memories will often contain some small errors and occasionally some large errors. In this article, we describe several different types of memory errors and consider how these errors may influence therapy.

Manipulating remember and know judgements of autobiographical memories: an investigation of false memory creation

SUMMARY We investigated memory qualities that aAect judgements of whether a recollection is a personal memory or self-knowledge. In Experiment 1, college students described three types of childhood experiences: remembered, known but not remembered, and unsure whether remembered or known. After describing the experiences, they rated their memories on several characteristics (e.g. visual detail, emotion). Remembered events were rated as containing more information on almost all the dimensions than the known events (unsure events were rated between the other two types of events). Based on the observed diAerences, in Experiments 2 and 3 we manipulated remember versus know ratings. Participants described a remember, know, or unsure event. Some then formed a mental image of the event while others did not. Creation and description of a mental image led participants to rate known events closer to remember. The remember/know rating is a source-monitoring decision based on the quality of the memory. #1998 John Wiley & Sons, Ltd.

Texting everywhere for everything: Gender and age differences in cell phone etiquette and use

The majority of research on cell phone use has focused on adolescent and young adult users with less attention on cell phone use by those older than 25years of age. In this study, adult participants from 18 to 68years completed a survey about their own use of cell phones and the contexts in which they considered cell phone use appropriate. There were age and gender differences in beliefs about the etiquette as to when cell phone use was appropriate. Older participants and women advocated for more restricted cell phone use in most social situations. Men differed from women in that they viewed cell phone calls as more appropriate in virtually all environments including intimate settings. Across all age groups in all communication settings, cell phones were used to text. The only exception was that romantic partners were more likely to receive a call than a text. In the younger age groups, texting communication is so normative that over 25% had dumped or were dumped by a romantic partner. The preponderance of gender similarities point to cell phone usage as a stable communication vehicle for maintaining social contact.

Individual differences related to two types of memory errors: word lists may not generalize to autobiographical memory

SUMMARY In two experiments we investigated individual diAerences related to memory errors. In Experiment 1, we conducted an exploratory study of several factors possibly related to the tendency to change source monitoring decisions for an autobiographical memory. We found that only the Dissociative Experiences Scale (DES) was related to this autobiographical memory error. In Experiment 2, we used both the autobiographical memory task and a word list task as measures of memory. Aspects of the DES were related to errors in both measures and imagery vividness was related to errors in the word list study. The tendency to change a source judgement for an autobiographical memory was not related to the number of errors in a word list task. Performance on word lists may not be a good predictor of an individual’s performance in everyday memory tasks because the two may be based on diAerent underlying processes. #1998 John Wiley & Sons, Ltd.

Children's memory for trauma and positive experiences

Characteristics of childrens memory for a trauma and for a positive event were compared and relationships of memory characteristics to trauma symptoms examined in 30 children who experienced a traumatic event. Results revealed that memories for trauma tended to have less sensory detail and coherence, yet have more meaning and impact than did memories for positive experiences. Sexual traumas, offender relationship, and perceived life threat were associated with memory characteristics. Few relationships between memory characteristics and trauma symptoms were found. Therapist ratings of child memory characteristics were correlated with some child trauma memory characteristic reports. These results are consistent with other studies. Possible explanations include divided attention during the traumatic event and cognitive avoidance occurring after the event.

Memorabeatlia: A naturalistic study of long-term memory

Seventy-six undergraduates were given the titles and first lines of Beatles’ songs and asked to recall the songs. Seven hundred and four different undergraduates were cued with one line from each of 25 Beatles’ songs and asked to recall the title. The probability of recalling a line was best predicted by the number of times a line was repeated in the song and how early the line first appeared in the song. The probability of cuing to the title was best predicted by whether the line shared words with the title. Although the subjects recalled only 21% of the lines, there were very few errors in recall, and the errors rarely violated the rhythmic, poetic, or thematic constraints of the songs. Acting together, these constraints can account for the near verbatim recall observed. Fourteen subjects, who transcribed one song, made fewer and different errors than the subjects who had recalled the song, indicating that the errors in recall were not primarily the result of errors in encoding.

A mega-analysis of memory reports from eight peer-reviewed false memory implantation studies

ABSTRACT Understanding that suggestive practices can promote false beliefs and false memories for childhood events is important in many settings (e.g., psychotherapeutic, medical, and legal). The generalisability of findings from memory implantation studies has been questioned due to variability in estimates across studies. Such variability is partly due to false memories having been operationalised differently across studies and to differences in memory induction techniques. We explored ways of defining false memory based on memory science and developed a reliable coding system that we applied to reports from eight published implantation studies (N = 423). Independent raters coded transcripts using seven criteria: accepting the suggestion, elaboration beyond the suggestion, imagery, coherence, emotion, memory statements, and not rejecting the suggestion. Using this scheme, 30.4% of cases were classified as false memories and another 23% were classified as having accepted the event to some degree. When the suggestion included self-relevant information, an imagination procedure, and was not accompanied by a photo depicting the event, the memory formation rate was 46.1%. Our research demonstrates a useful procedure for systematically combining data that are not amenable to meta-analysis, and provides the most valid estimate of false memory formation and associated moderating factors within the implantation literature to date.

Failure to see money on a tree: inattentional blindness for objects that guided behavior

How is it possible to drive home and have no awareness of the trip? We documented a new form of inattentional blindness in which people fail to become aware of obstacles that had guided their behavior. In our first study, we found that people talking on cell phones while walking waited longer to avoid an obstacle and were less likely to be aware that they had avoided an obstacle than other individual walkers. In our second study, cell phone talkers and texters were less likely to show awareness of money on a tree over the pathway they were traversing. Nonetheless, they managed to avoid walking into the money tree. Perceptual information may be processed in two distinct pathways – one guiding behavior and the other leading to awareness. We observed that people can appropriately use information to guide behavior without awareness.

Recall and Validation of Phobia Origins as a Function of a Structured Interview Versus the Phobia Origins Questionnaire

Memory for fear onset events was examined in 43 dog-fearful and 48 blood/injection-fearful participants. Half of each fear type was administered the Phobia Origins Questionnaire (POQ), and half the Phobia Origins Structured Interview (POSI). Written accounts of recalled onset experiences were sent to participants’ parents for verification. More participants assessed by the POQ reported a phobia onset event (93%) than did those assessed by the POSI (54%).Amajority in both methods recalled conditioning-like experiences. The POQ resulted in more reports of vicarious and informational onset reports than did the POSI. Parents confirmed more onset event reports obtained by the POSI (81%) than those obtained by the POQ, (50%). In addition, in 21% of cases where a child recalled an event, a parent reported an onset event that predated the one provided by the child. Results are discussed in terms of memory mechanisms operative in autobiographical memories.