Impaired identification of fearful faces in Generalised Social Phobia

JOURNAL OF AFFECTIVE DISORDERS

卷:115

Article

Garner, Matthew^1,2  Baldwin, David S.²  Bradley, Brendan P.¹  Mogg, Karin¹ 

[1] Univ Southampton, Sch Psychol, Southampton SO17 1BJ, Hants, England

[2] Univ Southampton, Sch Med, Div Clin Neurosci, Southampton SO17 1BJ, Hants, England

关键词: Social phobia;    Anxiety;    Cognitive bias;    Face processing;    Emotional expressions;   

DOI  :  10.1016/j.jad.2008.10.020

来源: Elsevier

【 摘 要 】

Background: Cognitive models and interventions for anxiety assume that socially anxious individuals interpret ambiguous social information in a threatening manner. However, experimental evidence for this hypothesised cognitive bias is mixed. The present study is novel in using a signal detection approach to clarify whether Generalised Social Phobia (GSP) is associated with biased identification of emotionally ambiguous facial expressions. Methods: 16 patients with GSP and 17 non-anxious volunteers classified ambiguous emotional facial expressions, with each face reflecting a blend of two emotions: angry-happy, fearful-happy and fearful-angry. Discrimination accuracy and response criterion were assessed. Results: Patients with GSP showed significantly poorer discrimination of ambiguous emotional facial expressions that contained an element of fear (i.e., fearful-happy and fearful-angry expressions), compared to non-anxious controls. The groups did not significantly differ in discrimination of faces which lacked fear content (i.e., angry-happy blend), or on measures of response criterion. Limitations: Small sample size, coexisting depressive symptoms. Conclusions: Findings indicate a selective impairment in fear identification in GSP. Results are discussed with reference to neurocognitive models of anxiety, and research on serotonergic modulation of emotional face processing. (C) 2008 Published by Elsevier B.V.

【 授权许可】

Free