title: A study of trait anhedonia in non-clinical Chinese samples: evidence from the Chapman Scales for Physical and Social Anhedonia.
abstract: BACKGROUND
  Recent studies suggest that anhedonia, an inability to experience pleasure, can be measured as an enduring trait in non-clinical samples. In order to examine trait anhedonia in a non-clinical sample, we examined the properties of a range of widely used questionnaires capturing anhedonia.
  
  
  METHODS
  887 young adults were recruited from colleges. All of them were administered a set of checklists, including Chapman Scale for Social Anhedonia (CRSAS) and the Chapman Scale for Physical Anhedonia Scale (CPAS), The Temporal Experience of Pleasure Scale(TEPS), and The Schizotypal Personality Questionnaire (SPQ).
  
  
  RESULTS
  Males showed significantly higher level of physical (F = 5.09, p<0.001) and social (F = 4.38, p<0.005) anhedonia than females. As expected, individuals with schizotypal personality features also demonstrated significantly higher scores of physical (t = 3.81, p<0.001) and social (t = 7.33, p<0.001) trait anhedonia than individuals without SPD features, but no difference on self-report anticipatory and consummatory pleasure experience.
  
  
  CONCLUSIONS
  Concerning the comparison on each item of physical and social anhedonia, the results indicated that individuals with SPD feature exhibited higher than individuals without SPD features on more items of social anhedonia than physical anhedonia scale. These preliminary findings suggested that trait anhedonia can be identified a non-clinical sample. Exploring the demographic and clinical correlates of trait anhedonia in the general population may provide clues to the pathogenesis of psychotic disorder.
authors.affiliation: Neuropsychology and Applied Cognitive Neuroscience Laboratory, Key Laboratory of Mental Health, Institute of Psychology, Chinese Academy of Sciences, Beijing, China. rckchan@psych.ac.cn
authors.forename: Raymond C K
authors.initials: RC
authors.lastname: Chan
authors.forename: Yi
authors.initials: Y
authors.lastname: Wang
authors.forename: Chao
authors.initials: C
authors.lastname: Yan
authors.forename: Qing
authors.initials: Q
authors.lastname: Zhao
authors.forename: John
authors.initials: J
authors.lastname: McGrath
authors.forename: Xiaolu
authors.initials: X
authors.lastname: Hsi
authors.forename: William S
authors.initials: WS
authors.lastname: Stone
mesh_terms: D000293:Adolescent; D000328:Adult; D059445:Anhedonia; D044466:Asian People / Q000523:psychology*; D002681:China; D005260:Female; D006801:Humans; D008297:Male; D011569:Psychiatric Status Rating Scales; D012737:Sex Factors; D011795:Surveys and Questionnaires; D055815:Young Adult