Two decades of research using repeated false statements and underhanded information have shown that people can easily be made to believe that they have seen or experienced something they never did. In this paper, we discuss the possibility that the mental health professional and client may unknowingly collaborate to create a client′s false memory of childhood sexual abuse. Both therapist and client bring beliefs into therapy, and the confirmation bias shows that people discover what they already believe to (...) be true. What do people believe about memory? We asked 115 students for their reactions to various statements about how memory works; results showed widespread belief in the repression mechanism. A principal components analysis revealed that three larger beliefs explained 61% of the variance in the more specific beliefs: possible sources of memory distortions, memory for traumatic events, and the potential recoverability of memories. Finally, we discuss the ambiguity inherent in the term repression, as well as the generalizability of misinformation research to the repressed and recovered memories. (shrink)

Emotional memories are vivid and lasting but not necessarily accurate. Under some conditions, emotion even increases people’s susceptibility to false memories. This review addresses when and why emotion leaves people vulnerable to misremembering events. Recent research suggests that pregoal emotions—those experienced before goal attainment or failure —narrow the scope of people’s attention to information that is central to their goals. This narrow focus can impair memory for peripheral details, leaving people vulnerable to misinformation concerning those details. In contrast, (...) postgoal emotions—those experienced after goal attainment or failure —broaden the scope of attention leaving people more resistant to misinformation. Implications for legal contexts, such as emotion-related errors in eyewitness testimony, are discussed. (shrink)

Maswood and Rajaram examine the transmission of false memories across small and larger networks. While the spread of false memories is not inherently beneficial, Maswood & Rajaram argued that a better understanding of the formation and propagation of false memories has practical and societal implications. For example, by better understanding how false memories transmit across groups, we might be better equipped to prevent detrimental behaviors that arise as a result of “fake news.”.

The incorporation of post-event testimonial information into an agent’s memory representation of the event via constructive memory processes gives rise to the misinformation effect, in which the incorporation of inaccurate testimonial information results in the formation of a false memory belief. While psychological research has focussed primarily on the incorporation of inaccurate information, the incorporation of accurate information raises a particularly interesting epistemological question: do the resulting memory beliefs qualify as knowledge? It is intuitively plausible that they do (...) not, for they appear to be only luckily true. I argue, however, that, despite its intuitive plausibility, this view is mistaken: once we adopt an adequate (modal) conception of epistemic luck and an adequate (adaptive) general approach to memory, it becomes clear that memory beliefs resulting from the incorporation of accurate testimonial information are not in general luckily true. I conclude by sketching some implications of this argument for the psychology of memory, suggesting that the misinformation effect would better be investigated in the context of a broader “information effect”. (shrink)

Eyewitnesses are susceptible to recollecting that they experienced an event in a way that is consistent with false information provided to them after the event. The effect is commonly called the misinformation effect. Because jurors tend to find eyewitness testimony compelling and persuasive, it is argued that jurors are likely to give inappropriate credence to eyewitness testimony, judging it to be reliable when it is not. It is argued that jurors should be informed about psychological findings on the (...) misinformation effect, to ensure that they lower the credence that they give to eyewitness testimony to reflect the unreliability of human memory that is demonstrated by the effect. Here I present a new argument, the overcritical juror argument, to support the conclusion that eyewitnesses are likely to make inappropriate credence assignments to eyewitness testimony. Whereas previously authors have argued that jurors will tend to give too much credence to eyewitness testimony, I identify circumstances in which jurors will give too little credence to some pieces of testimony. In my view jurors should be informed by psychological findings relating to the misinformation effect to ensure that they do not lower the credence that they give to eyewitness testimony when they should not. (shrink)

Wegner, Giuliano, and Hertel (1985) defined the notion of a transactive memory system (TMS) as a group level memory system that “involves the operation of the memory systems of the individuals and the processes of communication that occur within the group (p. 191). Those processes are the collaborative procedures (“transactions”) by which groups encode, store, and retrieve information that is distributed among their members. Over the past 25+ years, the conception of a TMS has progressively garnered an increased interest among (...) social and organizational psychologists, communication scholars, and management theorists (Ren & Argote 2011). But there remains considerable disagreement about how exactly Wegner’s appeal to group memory should be understood. My goal in this paper is contribute to this debate, by articulating more clearly the value of conceptualizing groups as TMSs. This value, I argue, consists in providing us with a blueprint for how to explain group memory in terms of collective information-processing mechanisms. Collective information-processing mechanisms are dependent on, and interact with, the brain-bound information-processing of individuals, but cannot be reduced to the latter. In my analysis, I lean on extant accounts of mechanistic explanation in the philosophy of science (Bechtel & Richardson 1993; Machamer, Darden, & Craver 2000; Wimsatt 2007) that have been used to analyze the explanatory practices of psychology and cognitive neuroscience (Bechtel 2008, 2009). Based on my reconstruction of Wegner’s conceptualization of a TMS, I argue that the reality of emergent group cognition is compatible with its mechanistic explanation. More generally, my analysis shows that group cognition cannot be reduced to individual cognition, while avoiding the false dilemma between “wholism” and “nothing but-ism” which has hampered traditional construals of the “group mind” thesis (Allport 1968). (shrink)

In a typical experiment on the misinformation effect, subjects first watch some event, afterwards read a description of it which in the experimental group includes some incorrect details, and answer questions relating to the original event. Typically, subjects in the misled experimental group report more false details than those from the control group. The main purpose of the presented study was to compare two methods of reducing the misinformation effect, namely - warning against misinformation and reinforced (...) self-affirmation. The reinforced self-affirmation consists of two elements: the participants recall their greatest achievements of life, and are being given a positive feedback about their performance in a memory task. The obtained results showed that the reinforced self-affirmation was more effective than warning, although the latter also caused a significant reduction of the vulnerability to misinformation. (shrink)

We provide a translation of Binet and Henri’s pioneering 1894 paper on the influence of suggestibility on memory. Alfred Binet is famous as the author who created the IQ test that bears his name, but he is almost unknown as the psychological investigator who generated numerous original experiments and fascinating results in the study of memory. His experiments published in 1894 manipulated suggestibility in several ways to determine effects on remembering. Three particular modes of suggestion were employed to induce (...) class='Hi'>false recognitions: indirect suggestion by a preconceived idea; direct suggestion; and collective suggestion. In the commentary we suggest that Binet and Henri’s paper written over 115 years ago is still highly relevant even today. In particular, Binet’s legacy lives on in modern research on misinformation effects in memory, in studies of conformity, and in experiments on the social contagion of memory. (shrink)

Presentation times of study words presented in the Deese/Roediger and McDermott (DRM) paradigm varied from 20 to 2000 ms per word in an attempt to replicate the false memory effect following extremely short presentations reported by . Both in a within-subjects design (Experiment 1) and in a between-subjects design (Experiment 2) subjects showed memory for studied words as well as a false memory effect for related critical lures in the 2000-ms condition. However, in the conditions with shorter presentation (...) times (20 ms in Experiment 1; 20 and 40 ms in Experiment 2) no memory for studied words, nor a false memory effect was found. We argue that there is at present no strong evidence supporting the claim for a nonconscious basis of the false memory effect. (shrink)

The Deese/Roediger–McDermott paradigm has been used extensively to examine false memory. During the study session, participants learn lists of semantically related items, referred to as targets. Critical lures are items which are also associated with the lists but are intentionally omitted from study. At test, when asked to remember targets, participants often report false memories for critical lures. Findings from experiments using the DRM show the ease with which false memories develop in the absence of suggestion or (...) misinformation. Given this, it is important to examine factors which influence the generalizability of the findings. One important factor is the persistence of false memory, or how long false memories last. Therefore, we conducted a systemic review to answer this research question: What is the persistence of false memory for specific items in the DRM paradigm? To help answer this question our review had two research objectives: to examine the trajectory of target memory and false memory for critical lures and to examine whether memory for targets exceeded false memory for critical lures. We included empirical articles which tested memory for the same DRM lists with at least two testing sessions. We discuss the results with respect to single-session delays, long-term memory recall and recognition, remember and know judgments for memory, and the effect of development, valence, warning, and connectivity on the trajectory of memory. Overall, the trajectory of targets showed a relatively consistent pattern of decrease across delay. The trajectory of critical lures was inconsistent. The proportion of targets versus critical lures across delay was also inconsistent. Despite the inconsistencies, we conclude that targets and critical lures have a dissimilar trajectory across delay and that critical lures are more persistent than targets. The findings with respect to long-term recall and recognition are consistent with both Fuzzy Trace Theory and Associative-Activation Theory of the DRM effect. The generation of false memory with brief delays is better explained by Associative-Activation Theory. Examining the connectivity between target items, and critical lures, and the effect that has during study and retrieval, can provide insight into the persistence of false memory for critical lures. (shrink)

Pezdek and Lam [Pezdek, K. & Lam, S. . What research paradigms have cognitive psychologists used to study “False memory,” and what are the implications of these choices? Consciousness and Cognition] claim that the majority of research into false memories has been misguided. Specifically, they charge that false memory scientists have been misusing the term “false memory,” relying on the wrong methodologies to study false memories, and misapplying false memory research to real world situations. (...) We review each of these claims and highlight the problems with them. We conclude that several types of false memory research have advanced our knowledge of autobiographical and recovered memories, and that future research will continue to make significant contributions to how we understand memory and memory errors. (shrink)

In experiments concerning the misinformation effect, participants first watch some original material, e.g. a video clip, and read a description that in the experimental group contains information inconsistent with the video clip. Afterwards, all participants answer questions about the video. Typically, the misled group more often reports erroneous misleading information than the non-misled one.Theoretical explanations of this effect are usually formulated in terms of the cognitive theories of memory. This article presents three experiments that demonstrate that the misinformation (...) effect can occur even if the memory of the original and postevent materials is correct. In the experiments, after watching a video clip, reading a narrative about it, and answering questions about the video, the participants were debriefed and required to indicate questions in which they noticed differences between the video and the narrative, as well as provide answers about the original and postevent materials. A substantial number of the participants yielded to the misinformation effect in the memory test even though they had correct memory about the original materials. The discussion emphasizes the need of the social influence framework to explain these results. Key message: the misinformation effect is important for applied forensic eyewitness psychology. To get a better understanding of this effect, there is a need to study it not only in terms of the cognitive psychology of memory, but also from the perspective of social psychology, because in many cases witnesses give wrong answers even when remembering the correct information. (shrink)

Fake news is a scourge within modern society, brought about by foreign powers amplifying messages throughout the recently constructed echo chambers of social media and exacerbated by the lack of co...

In this essay, I attempt to outline a feminist philosophical approach to the current debate concerning (allegedly) false memories of childhood sexual abuse. Bringing the voices of feminist philosophers to bear on this issue highlights the implicit and sometimes questionable epistemological, metaphysical, and ethical-political commitments of some therapists and scientists involved in these debates. It also illuminates some current debates in and about feminist philosophy.

Blackmore and Rose reported an experiment designed to examine the operation of psi when reality and imagination were confused. The original experiment used a situation in which participants were encouraged to generate false memories of common household objects. The topic of false memory is highly relevant to parapsychologists and psychical researchers in two ways. First, it may be the case that psi lurks in this borderline between reality and imagination. There are abundant examples of phenomena that appear to (...) utilise such a confusion: spontaneous cases, which often involve “realistic dreams,” lucid dreams, false awakenings, hypnagogic images, waking imagery, and sleep paralysis; and states in which reality and imagination are often confused. The occult traditions, for example, shamanistic traditions that entail the use of drugs and sensory deprivation to induce altered states of consciousness in which imagery is enhanced, and experienced journeys are interpreted as real excursions. Finally, laboratory psi techniques, for example, the use of hypnosis or encouraging imagery to arise unbidden, can also be thought of as utilising this kind of confusion. Alternatively, confusions between reality and imagination can represent a serious problem for parapsychologists and psychical researchers who often have to rely on eyewitness reports of spontaneous, ostensibly psychic, or paranormal events. The fact that the investigation of. (shrink)

We contest each other's memory claims all the time. I am concerned with how the contesting of memory claims and narratives may be an integral part of many abusive situations. I use the writings of Otto Weininger and the False Memory Syndrome Foundation to explore a particular strategy of discrediting women as rememberers, making them more vulnerable to sexual harm. This strategy relies on the presentation of women as unable to maintain a stable enough sense of self or identity (...) to be trustworthy testifiers to their own harm. (shrink)

When Cool finally realized that false memories had been planted, she sued the psychiatrist for malpractice. In March 1997, after five weeks of trial, her case was settled out of court for $2.4 million. Nadean Cool is not the only patient to develop false memories as a result of questionable therapy. In Missouri in 1992 a church counselor helped Beth Rutherford to remember during therapy that her father, a clergyman, had regularly raped her between the ages of seven (...) and 14 and that her mother sometimes helped him by holding her down. Under her therapist's guidance, Rutherford developed memories of her father twice impregnating her and forcing her to abort the fetus herself with a coat hanger.The father had to resign from his post as a clergyman when the allegations were made public. Later medical examination of the daughter revealed, however, that she was still a virgin at age 22 and had never been pregnant. The daughter sued the therapist and received a $1-million settlement in 1996. (shrink)

One challenge to creating realistic cognitive models of memory is the inability to account for the vast common–sense knowledge of human participants. Large computational knowledge bases such as WordNet and DBpedia may offer a solution to this problem but may pose other challenges. This paper explores some of these difficulties through a semantic network spreading activation model of the Deese–Roediger–McDermott false memory task. In three experiments, we show that these knowledge bases only capture a subset of human associations, while (...) irrelevant information introduces noise and makes efficient modeling difficult. We conclude that the contents of these knowledge bases must be augmented and, more important, that the algorithms must be refined and optimized, before large knowledge bases can be widely used for cognitive modeling. (shrink)

Reports of anomalous experiences are to be found in all known societies, both historically and geographically. If these reports were accurate, they would constitute powerful evidence for the existence of paranormal forces. However, research into the fallibility of human memory suggests that we should be cautious in accepting such reports at face value. Experimental research has shown that eyewitness testimony is unreliable, including eyewitness testimony for anomalous events. The present paper also reviews recent research into susceptibility to false memories (...) and considers the relevance of such work for assessing reports of anomalous events. It is noted that a number of psychological variables that have been shown to correlate with susceptibility to false memories also correlate with the tendency to report paranormal and related anomalous experiences. Although attempts to show a direct link between tendency to report anomalous experiences and susceptibility to false memories have had only limited success to date, this may reflect the use of inappropriate measures. (shrink)

Emotional content has complex effects on false memory. Under certain circumstances, emotional material may reduce the likelihood of false memory, a phenomenon that some consider related to it being...

We contest each other's memory claims all the time. I am concerned with how the contesting of memory claims and narratives may be an integral part of many abusive situations. I use the writings of Otto Weininger and the False Memory Syndrome Foundation to explore a particular strategy of discrediting women as rememberers, making them more vulnerable to sexual harm. This strategy relies on the presentation of women as unable to maintain a stable enough sense of self or identity (...) to be trustworthy testifiers to their own harm. (shrink)

We contest each other's memory claims all the time. I am concerned with how the contesting of memory claims and narratives may be an integral part of many abusive situations. I use the writings of Otto Weininger and the False Memory Syndrome Foundation to explore a particular strategy of discrediting women as rememberers, making them more vulnerable to sexual harm. This strategy relies on the presentation of women as unable to maintain a stable enough sense of self or identity (...) to be trustworthy testifiers to their own harm. (shrink)

Previous research shows that manipulations (e.g. levels-of-processing) that facilitate true memory often increase susceptibility to false memory. An exception is the generation effect. Using the Deese/Roediger–McDermott (DRM) paradigm, Soraci et al. found that generating rather than reading list items led to an increase in true but not false memories. They argued that generation led to enhanced item-distinctiveness that drove down false memory production. In the current study, we investigated the effects of generative processing on valenced stimuli and (...) after a delayed retention interval to examine factors that may lead to a generation effect that increases false memories. At the immediate test, false recognition rates for both negative and neutral valanced critical lures were similar across read and generate conditions. However, after a one-week delay, we saw a valence differentiation, with a generation effect for false recognition but only for negative stimuli. The roles of item-specific and relational processing during encoding and their interaction with long-term retention are discussed. (shrink)

Previous research has demonstrated that people are susceptible to developing false memories, that is to recall events that did not actually occur or recall them differently than they occurred (Dods...

With growing concerns over children's suggestibility and how it may impact their reliability as witnesses, there is increasing interest in determining the long-term effects of induced memories. The goal of the present research was to learn whether source misattributions found by Ceci, Huffman, Smith, and Loftus caused permanent memory alterations in the subjects tested. When 22 children from the original study were reinterviewed 2 years later, they recalled 77% of all true events. However, they only consented to 13% of all (...) false events, compared to the 22% false consent rate found by Ceci et al. . Additionally, while children remained accurate in their recall of true events , they “recanted” their earlier false consents 77% of the time, after the 2-year delay. Implications of these findings for child witnesses and the legal system are discussed. (shrink)

The integrative memory model combines five core memory systems with an attributional system. We agree with Bastin et al. that this melding is the most novel aspect of the model. But we await further evidence that the model's substantial complexity informs our understanding of false memories or of the development of recollection and familiarity.

Memory conformity may occur when a person’s belief in another’s memory report outweighs their belief in their own. Witnesses might be less likely to believe and therefore take on false information from intoxicated co-witnesses, due to the common belief that alcohol impairs memory performance. This paper presents an online study in which participants watched a video of a mock crime taking place outside a pub that included a witness either visibly consuming wine or a soft drink. Participants then read (...) a statement from the witness that varied in the number of false details it contained before being asked to recall the crime. We found that the intoxicated witness was regarded as significantly less credible, but participants were not less likely to report misinformation from them. This suggests that intoxication status impacts one’s perception of how credible a source is, but not one’s ability to reject false suggestions from this source. Our findings reinforce the importance of minimizing co-witness discussion prior to interview, and not to assume that people automatically discount information provided by intoxicated co-witnesses. (shrink)

ABSTRACTThe negativity bias is the tendency for individuals to give greater weight, and often exhibit more rapid and extreme responses, to negative than positive information. Using the Deese-Roediger-McDermott illusory memory paradigm, the current study sought to examine how the negativity bias might affect both correct recognition for negative and positive words and false recognition for associated critical lures, as well as how trait neuroticism might moderate these effects. In two experiments, participants studied lists of words composed of semantic associates (...) of an unpresented word. Half of the lists were comprised of positive words and half were comprised of negative words. As expected, individuals remembered negative list words better than positive list words, consistent with a negativity bias in correct recognition. When tested immediately, individuals also exhibited greater false memory for negative versus positive critical lures. When tested after a 24-hr delay... (shrink)

Memory errors and, specifically, false memories in the Deese/Roediger–McDermott paradigm have been extensively studied in the past decades. Most studies have investigated false memory in monolinguals’ native or first language (L1), but interest has also grown in examining false memories in participants’ second language (L2) with different proficiency levels. The main purpose of this manuscript is to review the current state of knowledge on the role of language proficiency on false memories when participants encode and retrieve (...) information in the same language. To do so, a systematic literature search was conducted, and the available studies were reviewed. These studies differed in, for example, age, language proficiency, or material characteristics, including both high and low associative strength lists, and they reported different results. In this review, we attempted to make sense of the apparently contradictory results by carefully identifying participants’ language dominance and L2 proficiency. Specifically, the results indicated that, first, people are more prone to produce false memories in their dominant than in their non-dominant language. This result generalizes to lists with high and low associative strength, as well as to participants of different ages. Second, false memories do not differ between two languages when speakers are equally proficient in both languages. Finally, highly proficient L2 speakers produce more false memories in their L2 than speakers with lower L2 proficiency. The results of this review will be considered in the light of the theoretical frameworks of false memories and bilingual language processing. (shrink)

One challenge to creating realistic cognitive models of memory is the inability to account for the vast common–sense knowledge of human participants. Large computational knowledge bases such as WordNet and DBpedia may offer a solution to this problem but may pose other challenges. This paper explores some of these difficulties through a semantic network spreading activation model of the Deese–Roediger–McDermott false memory task. In three experiments, we show that these knowledge bases only capture a subset of human associations, while (...) irrelevant information introduces noise and makes efficient modeling difficult. We conclude that the contents of these knowledge bases must be augmented and, more important, that the algorithms must be refined and optimized, before large knowledge bases can be widely used for cognitive modeling. (shrink)

McKay & Dennett (M&D) suggest that some positive illusions are adaptive. But there is a bidirectional link between memory and positive illusions: Biased autobiographical memories filter incoming information, and self-enhancing information is preferentially attended and used to update memory. Extending M&D's approach, I ask if certain false memories might be adaptive, defending a broad view of the psychosocial functions of remembering.

Building on Dor’s theory of language as a social technology for the instruction of imagination, I suggest that autobiographical memory evolved culturally as a response to the problems of false memory and deliberate deceit that were introduced by that technology. I propose that sapiens’ linguistic communication about past and future events initially occurred in small groups, and this helped to correct individual memory defects. However, when human groups grew in size and became more socially differentiated, and movement between groups (...) prevented story-verification, misattributions of events became more common. In such conditions individuals with better autobiographical memory had an advantage because they could evaluate their own contents and sources of information, as well as that of others, more accurately; this not only benefitted them directly, but also improved their reliability as social partners. Autobiographical memory thus evolved in the context of human linguistic communication through selection for communicative reliability. However, the advantages of imagination, which enables forward-planning and decision-Making, meant that memory distortions, although controlled and moderated by autobiographical memory, could not be totally eradicated. This may have driven the evolution of additional forms of memory control involving social and linguistic norms. I interpret the language and the social norms of the Pirahã as the outcome of the cultural-evolutionary control of memory distortions. Some ways of testing aspects of this proposal are outlined. (shrink)

In response to the failure of Zeelenberg, Plomp, and Raaijmakers to replicate the results of Seamon, Luo, and Gallo regarding their purported finding of a reliable false memory effect in the absence of memory for the list items, Gallo and Seamon report a new experiment that they claim shows that conscious activation of a related lure during study is not necessary for its subsequent recognition. We critically evaluate their conclusion and argue that the evidence clearly shows that false (...) recognition is critically dependent on the conscious recollection of one or more of the list items. Thus, this as well as the previous experiments show no evidence for nonconscious processes in producing false memories. (shrink)