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Stimulus effects and the mediation of recognition memory
Ryan M McAdoo1, Kylie N Key1, Scott D Gronlund1
1Department of Psychology, University of Oklahoma.
Summary
Recognition memory can be discrete or continuous, depending on how similar items are. Semantically similar items suggest continuous memory, while dissimilar items suggest discrete memory, impacting eyewitness identification.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Memory Research
Background:
- Recognition memory is mediated by either discrete state or continuous evidence.
- Existing evidence for these models is mixed, suggesting adaptability.
- The influence of item similarity on memory mediation is not fully understood.
Purpose of the Study:
- To investigate whether the mediation of recognition memory is adaptable.
- To determine the effect of semantic similarity between targets and fillers on memory evidence.
Main Methods:
- Two experiments were conducted manipulating the semantic similarity of word targets and fillers.
- Recognition memory performance was analyzed to infer the type of evidence mediating recall.
Main Results:
- Experiment 1, using semantically similar fillers, provided evidence for continuous memory mediation.
- Experiment 2, using semantically dissimilar fillers, demonstrated discrete memory mediation.
- Findings contrast with previous research (Kellen & Klauer, 2015) regarding similar items.
Conclusions:
- The type of evidence mediating recognition memory is adaptable and influenced by semantic similarity.
- These findings have implications for understanding fundamental memory processes.
- The results are relevant to applied fields such as eyewitness identification.
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