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J Exp Psychol Gen. 2019 Jan;148(1):13-29. doi: 10.1037/xge0000472. Epub 2018 Sep 17.

Acute stress throughout the memory cycle: Diverging effects on associative and item memory.

Author information

1
Department of Psychology.
2
Department of Psychology, Columbia University.
3
Department of Psychology, New York University.

Abstract

Acute stress can modulate memory for individual parts of an event (items), but whether it similarly influences memory for associations between items remains unclear. We used a within-subjects design to explore the influence of acute stress on item and associative memory in humans. Participants associated negative words with neutral objects, rated their subjective arousal for each pair, and completed delayed item and paired associative recognition tasks. We found strikingly different patterns of acute stress effects on item and associative memory: for high-arousal pairs, preencoding stress enhanced associative memory, whereas postencoding stress enhanced item memory. Preretrieval stress consistently impaired both forms of memory. We found that the influence of stress-induced cortisol also varied, with a linear relationship between cortisol and item memory but a quadratic relationship between cortisol and associative memory. These findings reveal key differences in how stress, throughout the memory cycle, shapes our memories for items and associations. (PsycINFO Database Record (c) 2018 APA, all rights reserved).

PMID:
30221962
PMCID:
PMC6312485
[Available on 2020-01-01]
DOI:
10.1037/xge0000472
[Indexed for MEDLINE]

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