Title: Instructed extinction differentially affects the emotional and cognitive expression of associative fear memory
Authors: Sevenster, D.
Beckers, Tom
Kindt, M. # ×
Issue Date: Oct-2012
Publisher: Blackwell Publishing Inc.
Series Title: Psychophysiology vol:49 issue:10 pages:1426-1435
Abstract: Instructed extinction after fear conditioning is relatively effective in attenuating electrodermal responding. Testing the single-process account of fear learning, we examined whether this manipulation similarly affects the startle response. Skin conductance responses (SCRs), startle responses, and online unconditioned stimulus (US) expectancy ratings were measured during fear acquisition (Day 1), extinction, and reinstatement (Day 2). Before extinction onset, half of the subjects were instructed that the conditioned stimulus would not be followed by the US (Instructed Extinction) whereas the other subjects were not instructed (Normal Extinction). This simple instruction completely abolished both differential SCR and US expectancy ratings, but not the startle fear response. Although the manipulation facilitated extinction
learning, it did not prevent the recovery of the startle response. The present findings are better explained by a dual- rather than a single-process account of fear learning.
ISSN: 0048-5772
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Centre for Psychology of Learning and Experimental Psychopathology
× corresponding author
# (joint) last author

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