Cited by 130Memory and Neural MechanismsMemory Processes and InfluencesPosttraumatic Stress Disorder Research

Harnessing reconsolidation to weaken fear and appetitive memories: A meta-analysis of post-retrieval extinction effects.

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Kredlow, M. Alexandra, Unger, Leslie D., Otto, Michael W.·2016·Psychological Bulletin

Abstract

A new understanding of the mechanisms of memory retrieval and reconsolidation holds the potential for improving exposure-based treatments. Basic research indicates that following fear extinction, safety and fear memories may compete, raising the possibility of return of fear. One possible solution is to modify original fear memories through reconsolidation interference, reducing the likelihood of return of fear. Postretrieval extinction is a behavioral method of reconsolidation interference that has been explored in the context of conditioned fear and appetitive memory paradigms. This meta-analysis examines the magnitude of postretrieval extinction effects and potential moderators of these effects. A PubMed and PsycINFO search was conducted through June 2014. Sixty-three comparisons examining postretrieval extinction for preventing the return of fear or appetitive responses in animals or humans met inclusion criteria. Postretrieval extinction demonstrated a significant, small-to-moderate effect (g = .40) for further reducing the return of fear in humans and a significant, large effect (g = 0.89) for preventing the return of appetitive responses in animals relative to standard extinction. For fear outcomes in animals, effects were small (g = 0.21) and nonsignificant, but moderated by the number of animals housed together and the duration of time between postretrieval extinction/extinction and test. Across paradigms, these findings support the efficacy of this preclinical strategy for preventing the return of conditioned fear and appetitive responses. Overall, findings to date support the continued translation of postretrieval extinction research to human and clinical applications, with particular application to the treatment of anxiety, traumatic stress, and substance use disorders.

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  • Failed replications are not unique to clinical settings: pharmacological and extinction procedures within the reconsolidation window have sometimes not replicated, though there are more successful replications than non-replications.

    “Failed replications are not unique to clinical settings: pharmacological [125] and extinction procedures within the reconsolidation window [97,126–129] have sometimes not replicated—though note that there are more successful replications than non-replications.”

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  1. Chan WYM The effects of retrieval-extinction training on the restoration of Pavlovian conditioned fear Unpublished Ph.D. thesis 2014 Australia University of New South Wales (UNSW)

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Authors
Kredlow, M. A., Unger, L. D., & Otto, M. W.
Affiliations
Boston University (US)
Venue
Psychological Bulletin
Published
2016-03
Volume
142
Issue
3
Pages
314-336
ISSN
  • 0033-2909 (ISSN-L)
  • 1939-1455
OpenAlex
W2406870053
Cited by
130
References
107
Citations by year
2026: 8 · 2025: 4 · 2024: 9 · 2023: 6 · 2022: 12 · 2021: 7 · 2020: 20 · 2019: 17 · 2018: 19 · 2017: 23 · 2016: 5
FWCI
1.54
Type
journal article
Language
en
Open access
Locations
  • Psychological Bulletin (publishedVersion, other-oa)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institutes of Health (1F31MH103969)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
  • Social Sciences › Psychology › Clinical Psychology › Posttraumatic Stress Disorder Research
Keywords
memory reconsolidation, return of fear, fear extinction, appetitive memory, fear conditioning, exposure therapy, anxiety disorders, traumatic stress, substance use disorders
MeSH terms
Memory Consolidation, Animals, Appetitive Behavior, Extinction, Psychological, Fear, Humans, Mental Recall

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