Media Warnings About Environmental Pollution Facilitate the Acquisition of Symptoms in Response to Chemical Substances
Winnie Winters, PhD,
Stephan Devriese, PhD,
Ilse Van Diest, MA,
Benoit Nemery, MD,
Hendrik Veulemans, PhD,
Paul Eelen, PhD,
Karel Van de Woestijne, MD and
Omer Van den Bergh, PhD
Department of Psychology (W.W., S.D., I.V.D., P.E., O.V.D.B.), and Faculty of Medicine (B.N., H.V., K.V.D.W.), University of Leuven, Leuven, Belgium.

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Fig. 1. Conditioning effect on total symptoms score (means and standard error of mean) as a function of type of odor as CS+ (ammonia/nioauli) and prior information given to the participants.
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Copyright © 2003 by the American Psychosomatic Society