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"Howe, Mark L."
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The Adaptive Nature of Memory and Its Illusions
In this article I discuss how false memories do not always have to be associated with negative outcomes. Indeed, under some circumstances, memory illusions, like other illusions more generally, can have positive consequences. I discuss these consequences in the context of the adaptive function of memory, including how false memories can have fitness-relevant benefits for subsequent behavior and problem solving. My hope is that this article changes how illusions are conceptualized, especially those arising from memory. Rather than being a \"demon\" that vexes our theories of memory, illusions can be thought of as sometimes having positive consequences much in the same way as many of the other outputs of a very powerful, adaptive memory system.
Journal Article
A self-reference false memory effect in the DRM paradigm: Evidence from Eastern and Western samples
It is well established that processing information in relation to oneself (i.e., self-referencing) leads to better memory for that information than processing that same information in relation to others (i.e., other-referencing). However, it is unknown whether self-referencing also leads to more false memories than other-referencing does. In the current two experiments with European and East Asian samples, we presented participants the Deese–Roediger–McDermott lists together with their own name or other people’s name (i.e., “Trump” in Experiment
1
and “Li Ming” in Experiment
2
). We found consistent results across the two experiments; that is, in the self-reference condition, participants had higher true and false memory rates compared with those in the other-reference condition. Moreover, we found that self-referencing did not exhibit superior mnemonic advantage in terms of net accuracy compared with other-referencing and neutral conditions. These findings are discussed in terms of theoretical frameworks such as spreading activation theories and the fuzzy-trace theory. We propose that our results reflect the adaptive nature of memory in the sense that cognitive processes that increase mnemonic efficiency may also increase susceptibility to associative false memories.
Journal Article
Manipulating Memory Associations Minimizes Avoidance Behavior
Memories of the past can guide humans to avoid harm. The logical consequence of this is if memories are changed, avoidance behavior should be affected. More than 80 years of false memory research has shown that people’s memory can be re-constructed or distorted by receiving suggestive false feedback. The current study examined whether manipulating people’s memories of learned associations would impact fear related behavior. A modified sensory preconditioning paradigm of fear learning was used. Critically, in a memory test after fear learning, participants received verbal false feedback to change their memory associations. After receiving the false feedback, participants’ beliefs and memories ratings for learned associations decreased significantly compared to the no feedback condition. Furthermore, in the false feedback condition, participants no longer showed avoidance to fear conditioned stimuli and relevant subjective fear ratings dropped significantly. Our results suggest that manipulating memory associations might minimize avoidance behavior in fear conditioning. These data also highlight the role of memory in higher order conditioning.
Journal Article
Can Maltreated Children Inhibit True and False Memories for Emotional Information?
The authors examined 284 maltreated and nonmaltreated children's (6- to 12-year-olds) ability to inhibit true and false memories for neutral and emotional information using the Deese/Roediger-McDermott (DRM) paradigm. Children studied either emotional or neutral DRM lists in a control condition or were given directed-remembering or directed-forgetting instructions. The findings indicated that children, regardless of age and maltreatment status, could inhibit the output of true and false emotional information, although they did so less effectively than when they were inhibiting the output of neutral material. Verbal IQ was related to memory, but dissociative symptoms were not related to children's recollective ability. These findings add to the growing literature that shows more similarities among, than differences between, maltreated and nonmaltreated children's basic memory processes.
Journal Article
Memory development: implications for adults recalling childhood experiences in the courtroom
Cognitive and neurobiological changes during development influence the content and longevity of memories for events that occurred in early childhood. Mark L. Howe discusses the implications for court cases in which the main evidence consists of adults' recollections of childhood experiences.
Adults frequently provide compelling, detailed accounts of early childhood experiences in the courtroom. Judges and jurors are asked to decide guilt or innocence based solely on these decades-old memories using 'common sense' notions about memory. However, these notions are not in agreement with findings from neuroscientific and behavioural studies of memory development. Without expert guidance, judges and jurors may have difficulty in properly adjudicating the weight of memory evidence in cases involving adult recollections of childhood experiences.
Journal Article
Children (But Not Adults) Can Inhibit False Memories
The role of inhibition in children's (5-, 7-, and 11-year-olds') false memory illusions in the Deese-Roediger-McDermott (DRM) paradigm was examined using a list-wise directed-forgetting procedure. Children studied either a single DRM list (control) or two DRM lists in succession with a directed-remembering instruction or a directed-forgetting instruction between list presentations. The findings indicated that, like adults, children effectively suppressed the output of true memories when given a directed-forgetting instruction. Unlike adults, whose false memories are not attenuated in directed-forgetting conditions, children suppressed false memories at recall in the directed-forgetting condition. Because recognition data indicated that the children did generate false memories regardless of instruction, it appears that although adults' false memories are generated automatically and do not become part of their conscious experience, children's false memories are produced with greater effort and conscious processing, and as a result are easier to suppress at output.
Journal Article
The Return of the Repressed
Can purely psychological trauma lead to a complete blockage of autobiographical memories? This long-standing question about the existence of repressed memories has been at the heart of one of the most heated debates in modern psychology. These so-called memory wars originated in the 1990s, and many scholars have assumed that they are over. We demonstrate that this assumption is incorrect and that the controversial issue of repressed memories is alive and well and may even be on the rise. We review converging research and data from legal cases indicating that the topic of repressed memories remains active in clinical, legal, and academic settings. We show that the belief in repressed memories occurs on a nontrivial scale (58%) and appears to have increased among clinical psychologists since the 1990s. We also demonstrate that the scientifically controversial concept of dissociative amnesia, which we argue is a substitute term for memory repression, has gained in popularity. Finally, we review work on the adverse side effects of certain psychotherapeutic techniques, some of which may be linked to the recovery of repressed memories. The memory wars have not vanished. They have continued to endure and contribute to potentially damaging consequences in clinical, legal, and academic contexts.
Journal Article