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The Preparedness Theory of Phobias: The Effects of Initial Fear Level on Safety‐Signal Conditioning to Fear‐Relevant Stimuli
Author(s) -
McNally Richard J.,
Reiss Steven
Publication year - 1984
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/j.1469-8986.1984.tb00251.x
Subject(s) - phobias , psychology , fear conditioning , classical conditioning , stimulus (psychology) , conditioning , unconditioned stimulus , cognitive psychology , developmental psychology , audiology , anxiety , neuroscience , amygdala , psychiatry , medicine , statistics , mathematics
The preparedness theory of phobias implies that fear‐relevant stimuli are biologically contrapre‐pared for safety‐signal conditioning. Thus it should be very difficult to establish a pictorial snake as a safety‐signal predicting the absence of shock in a Pavlovian conditioned inhibition paradigm. Since this contrapreparedness is postulated as species‐wide, the snake stimulus should be an ineffective safety‐signal even in those subjects who do not fear snakes. In contrast, the prior fear hypothesis suggests that this difficulty should occur only in those subjects who already fear snakes. To test these hypotheses, subjects reporting either high or low snake fear were exposed to electrodermal conditioning trials designed to establish a fear‐relevant CS (a pictorial snake) and a fear‐irrelevant CS (a pictorial flower) as safety‐signals by nonreinforcing each in compound with a fear‐eliciting CS. The results provided marginal support for the prior fear hypothesis.