Differential susceptibility to performance degradation across categories of facial emotion - a model confirmation

被引:30
作者
Johnston, PJ [1 ]
McCabe, K [1 ]
Schall, U [1 ]
机构
[1] Univ Newcastle, Ctr Mental Hlth Studies, Fac Med & Hlth Sci, Callaghan, NSW 2308, Australia
关键词
facial emotions; stimulus materials; schizophrenia; task difficulty; AFFECT RECOGNITION; SCHIZOPHRENIA; EXPRESSIONS; DEFICIT; PERCEPTION; CLASSIFICATION; DISORDER; FACE;
D O I
10.1016/S0301-0511(03)00026-7
中图分类号
B84 [心理学];
学科分类号
04 ; 0402 ;
摘要
Patients with a number of psychiatric and neuropathological conditions demonstrate problems in recognising facial expressions of emotion. Research indicating that patients with schizophrenia perform more poorly in the recognition of negative valence facial stimuli than positive valence stimuli has been interpreted as evidence of a negative emotion specific deficit. An alternate explanation rests in the psychometric properties of the stimulus materials. This model suggests that the pattern of impairment observed in schizophrenia may reflect initial discrepancies in task difficulty between stimulus categories, which are not apparent in healthy subjects because of ceiling effects. This hypothesis is tested, by examining the performance of healthy subjects in a facial emotion categorisation task with three levels of stimulus resolution. Results confirm the predictions of the model, showing that performance degrades differentially across emotion categories, with the greatest deterioration to negative valence stimuli. In the light of these results, a possible methodology for detecting emotion specific deficits in clinical samples is discussed. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:45 / 58
页数:14
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