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A categorized guide to the foundations, biology, identification procedures and courtroom applications of memory. Use the guide below, or browse the individual papers by title.
Topics of Memory guide
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Aging and Memory
Memory changes unevenly across adulthood: abilities involving rapid processing and new learning tend to decline, while accumulated knowledge is often preserved. The article reviews age-related differences in perception, encoding, retrieval, source monitoring, and eyewitness identification, emphasizing that age alone does not determine whether a particular account is accurate.
Autobiographical Memory
Autobiographical memory is a person’s recollection of events from their own life, reconstructed from stored knowledge and later cues rather than replayed like a recording. The article explains why vividness, confidence, and consistency do not guarantee accuracy, and reviews how conversations, misinformation, and source confusion can alter personal memories.
Children’s Face Recognition
Children can recognize faces differently as their face-processing abilities develop, and they are more likely than adults to choose someone when the culprit is absent from a lineup. The article explains why description skill does not reliably predict identification accuracy and reviews safeguards such as unbiased instructions, fair lineups, and child-appropriate procedures.
Coding Child Interviews
The article describes a research method for evaluating forensic interviews by classifying interviewers’ prompts and counting new details supplied by a child. It distinguishes open invitations and facilitators from focused prompts, including directive, option-posing, and suggestive questions, which differ in how much they risk influencing children’s responses.
Delayed Recall
Delayed recall concerns how a witness’s account can change between an event and a later report, as memory details fade and post-event experiences shape retrieval. The article reviews differences between central and peripheral details, repeated telling and identification delays, and explains why an early, open-ended account can help document what was initially remembered.
Detecting Deception
This plain-language overview explains what research says about detecting deception from a person’s demeanor, speech, or physiological responses and why those judgments matter when courts assess witness credibility. It describes the low accuracy of unaided human lie detection, reviews limits in training and mechanical methods such as polygraphs, and explains why confident impressions alone cannot reliably distinguish truthful from deceptive witnesses.
Earwitness Memory
Earwitness memory concerns identifying a person from the sound of a voice, a task that is distinct from describing vocal qualities and is generally difficult for unfamiliar speakers. The article reviews how familiarity, exposure conditions, delay, and lineup procedures affect voice identification, and discusses fair testing and the limits of forensic voice comparison.
Emotion and Memory
This overview describes how emotion can affect the formation, vividness, and later accuracy of memory, with examples relevant to witnesses and jurors. It explains that moderate emotion may sometimes support memory while intense stress can impair details, and that vivid recollection or strong confidence does not by itself show that a memory is accurate.
Emotion, Trauma and Memory
Emotion can strengthen memory for some central details while weakening memory for other information, so vividness does not establish accuracy. The article reviews findings on emotional arousal, weapon focus, and intense stress, and explains that traumatic memories remain subject to ordinary processes of reconstruction rather than being uniquely reliable or uniquely unreliable.
Episodic Memory
Episodic memory is the system used to remember a particular personally experienced event, including what happened and its context, and it underlies eyewitness accounts. The article contrasts it with general semantic knowledge and explains how failures to bind details to their source, along with consolidation and reconstruction, can contribute to memory errors.
Eyewitness Confidence
Eyewitness confidence can be informative about accuracy when it is recorded at the initial identification under fair conditions and before outside influence. The article contrasts this with confidence expressed later, which can be inflated by feedback, repetition, and courtroom circumstances, and reviews how researchers and courts assess confidence evidence.
Eyewitness Memory
This overview explains how eyewitness memories are encoded, reconstructed, and affected by information encountered after an event, including wording and feedback. It reviews research on interview procedures, identification practices, and confidence, describing the Cognitive Interview as a structured, memory-informed method and noting that interviewing and identification conditions can influence both accuracy and later confidence.
Face Composites
Facial composites are sketches or generated faces made from a witness’s recollection to produce investigative leads, rather than to establish that a particular person committed an offense. The article reviews their variable identification performance and explains how describing a face, stereotypes, and seeing the composite again can affect a witness’s later memory.
Face Recognition
Face recognition is substantially more reliable for familiar people than for unfamiliar faces, which can be difficult to identify or match even when images are available for comparison. The article explains how viewing conditions and individual differences affect performance and considers the implications for eyewitness identification and comparisons of surveillance images.
Forgetting
Forgetting can reflect information that was never encoded, stored memories that have become harder to retrieve, or interference from other experiences and later information. The article distinguishes these mechanisms and explains their implications for gaps and changes in witness accounts, including how cues, selective questioning, and suggestive memory refreshing may shape recall.
Hypnosis and Memory
Hypnosis does not reliably recover accurate memories; it can increase the amount a person reports while also increasing inaccurate details and confidence in them. The article explains the risk of memory hardening and suggestibility, compares hypnosis with other influences, and reviews safeguards and legal approaches to testimony from hypnotized witnesses.
Implicit Memory
Implicit memory is the influence of past experience on behavior or judgment without conscious recollection of that experience. The article explains how fluency can create a feeling of familiarity whose source is misattributed, and discusses how prior exposure, including mugshots, can affect later identification without the witness recognizing the source.
Intoxication and Memory
Alcohol and other intoxicants can impair the formation of new memories without making every part of an account equally unreliable. The article describes narrowed attention, memory blackouts, and the possible preservation of salient information, while emphasizing that effects vary with substance, dose, and circumstances and that laboratory findings have limits when applied to real events.
Lineup Construction
Lineup construction affects whether an identification procedure gives a witness a fair test of memory or makes one person stand out. The article explains how lineup size and suspect bias can be assessed, why fillers should fit the witness’s description, and how composition interacts with administration and legal review.
Memory Development
This plain-language review explains how memory develops from infancy through childhood and how age-related changes can shape children’s accounts of events. It connects research on encoding, knowledge, retrieval, and suggestibility with legal questions about child testimony, including competency, interview methods, hearsay, and the conditions under which expert evidence may help a fact-finder evaluate a child’s statement.
Memory Expert Testimony
Memory expert testimony can explain general research on memory and identification and how relevant factors may affect evidence, while leaving judgments about a particular witness’s truthfulness or accuracy to the jury. The article reviews varying admissibility rules and research on whether such testimony helps jurors distinguish stronger identifications from weaker ones or instead encourages broad skepticism.
Memory for Oral Communications
Witnesses often remember the meaning of a conversation better than its exact wording, and their recollections can be shaped by context and assumptions about what a speaker meant. The paper describes how missing shared knowledge, distraction, motivated interpretation, and confusion about a memory’s source can alter reports of spoken statements, with implications for courtroom evaluation.
Memory for Persons
Witnesses’ verbal descriptions of people can guide an investigation, but they usually emphasize broad or changeable features such as clothing and hair rather than distinctive facial details. The paper reviews evidence that description length and confidence do not reliably predict later identification accuracy, and explains how timing, questioning, and the description’s fit with a lineup can affect evaluation.
Memory for Persons and Faces
Describing a face and recognizing it later are related but distinct tasks, and a verbal description does not reliably predict whether a witness will identify someone accurately. The paper draws on case records and experiments to discuss limited, often external descriptions, the possibility that describing a face can hinder later recognition, and the implications of sequence and lineup construction.
Memory for Violence and Weapon Focus
The paper examines how emotional violence and the presence of a weapon may influence eyewitness memory, including the tendency for attention to focus on central or unusual details at the expense of peripheral information. It reviews evidence that weapon focus is generally modest and often clearer for descriptions than identifications, and considers how threat, unusualness, and event conditions shape the effect.