Linscott Richard J
Department of Psychology, University of Otago, Dunedin 9054, New Xealand.
J Pers Disord. 2007 Jun;21(3):225-42. doi: 10.1521/pedi.2007.21.3.225.
Recent exchanges on the place of hypohedonia within Meehl's theory of schizotaxia, schizotypy, and schizophrenia focus on evidence of the taxonicity of asociality, not hedonic capacity per se. Two hypotheses were contrasted, one that hypohedonia is a nonpathological individual difference variable independent of schizotypy, the other that schizotypy and hypohedonia tap independent taxonic processes that predict the emergence of positive and negative signs of schizophrenia, respectively. Undergraduates (n = 1,543) completed a multifaceted measure of schizotypy and hypohedonia. A consecutive subsample of these (n = 284) also completed a continuous performance test and the Symptom Checklist 90-Revised. Independent taxometric analyses (maximum covariance and maximum eigenvalue) indicated schizotypy was taxonic and hypohedonia was dimensional. Their coincidence was no greater than chance. Schizotypy was associated with impaired attention and significant psychological distress, whereas hypohedonia was not. Hypohedonia does not behave like a core component of schizotypy.
最近关于快感缺乏在米尔的精神分裂症谱系障碍、分裂型人格障碍和精神分裂症理论中的地位的讨论，聚焦于社交缺乏的分类性证据，而非快感能力本身。两种假设形成了对比，一种假设认为快感缺乏是一个独立于分裂型人格障碍的非病理性个体差异变量，另一种假设则认为分裂型人格障碍和快感缺乏分别涉及独立的分类过程，这些过程分别预测精神分裂症阳性和阴性症状的出现。本科生（n = 1543）完成了一项关于分裂型人格障碍和快感缺乏的多方面测量。其中一个连续子样本（n = 284）还完成了连续操作测试和症状自评量表90修订版。独立的分类分析（最大协方差和最大特征值）表明，分裂型人格障碍具有分类性，而快感缺乏具有维度性。它们的一致性不高于随机水平。分裂型人格障碍与注意力受损和显著的心理困扰相关，而快感缺乏则不然。快感缺乏并非表现为分裂型人格障碍的核心组成部分。
