Related Experiment Video
Updated: May 16, 2026

07:59
Using Practice Testing, Public Speaking, and Source Monitoring to Examine the Influences of Learning Strategies and Stress on Episodic Memory
Published on: June 14, 2019
Retrieval does not always enhance suggestibility: testing can improve witness identification performance
Jessica A LaPaglia1, Jason C K Chan
1Department of Psychology, Iowa State University, Ames, IA 50011, USA.
Law and Human Behavior
|December 5, 2012
Summary
Recalling a perpetrator's face early on can improve eyewitness memory accuracy, making individuals less susceptible to later misinformation. This initial recall test strengthens memory resistance against misleading information.
Area of Science:
- Cognitive Psychology
- Eyewitness Testimony Research
Background:
- Verbal recall of event details can sometimes impair eyewitness memory.
- The impact of initial face recall on suggestibility is not fully understood.
Purpose of the Study:
- To investigate how verbally recalling a perpetrator's face affects eyewitnesses' resistance to subsequent misinformation.
- To determine if initial testing enhances memory accuracy against leading questions or suggestive lineups.
Main Methods:
- Participants watched a simulated theft video.
- An initial test involved either a recall task or a distractor activity.
- Misinformation was introduced after a delay, followed by memory assessment via recall or lineup.
Main Results:
- Initial verbal recall of the perpetrator's face significantly reduced suggestibility.
- Participants who underwent initial testing were less influenced by subsequent misinformation about the face.
Conclusions:
- Early verbal recall of facial features acts as a protective measure against eyewitness misinformation.
- Initial testing protocols can be beneficial in improving the reliability of eyewitness identification.
Related Concept Videos
Eyewitness Memory
Eyewitness memory refers to the recollection of events by someone who has directly witnessed them, often serving as critical evidence in legal settings. This type of memory is commonly used in criminal cases where a witness describes details like a suspect's appearance, clothing, or behavior during a crime. However, despite its perceived reliability, eyewitness memory is prone to significant errors.
One such error is memory distortion, which occurs because human memory does not function like a...
One such error is memory distortion, which occurs because human memory does not function like a...
False Memories
False memories represent a cognitive distortion in which individuals recall events that did not happen, or remember them in an altered form. This phenomenon highlights the brain's constructive nature in processing and recalling memories, emphasizing that memory is not a perfect representation of past events but rather a dynamic reconstruction influenced by various factors.
One primary source of false memories is misattribution, where individuals incorrectly associate external information with...
One primary source of false memories is misattribution, where individuals incorrectly associate external information with...
Tip-of-the-Tongue Phenomenon
The tip-of-the-tongue (TOT) phenomenon is a cognitive experience characterized by a temporary inability to retrieve specific information from memory despite having a strong feeling of knowing the information. Although individuals cannot access the target word or detail, they frequently recall related elements, such as its initial letter, syllable count, or context. This partial retrieval often causes frustration, as one might recognize a familiar face or know that a name starts with a specific...
Cause and Effect
While variables are sometimes correlated because one does cause the other, it could also be that some other factor, a confounding variable, is actually causing the systematic movement in our variables of interest. For instance, as sales in ice cream increase, so does the overall rate of crime. Is it possible that indulging in your favorite flavor of ice cream could send you on a crime spree? Or, after committing crime do you think you might decide to treat yourself to a cone?
Reliability and Validity
Reliability and validity are two important considerations that must be made with any type of data collection. Reliability refers to the ability to consistently produce a given result. In the context of psychological research, this would mean that any instruments or tools used to collect data do so in consistent, reproducible ways.
Hindsight Biases
Hindsight bias leads you to believe that the event you just experienced was predictable, even though it really wasn’t. In other words, you knew all along that things would turn out the way they did. Can you relate this to the phrase "Hindsight is 20/20" now?

