Medical Psychological Center, the Second Xiangya Hospital, Central South University, Changsha, 410011, China.
Student Affairs Department, Central South University, Changsha, 410083, China.
BMC Psychiatry. 2020 Nov 9;20(1):529. doi: 10.1186/s12888-020-02900-w.
Anhedonia is a core clinical symptom of mental disorders. The Revised Physical Anhedonia Scale (RPAS) and the Revised Social Anhedonia Scale (RSAS) have been applied in clinical and non-clinical samples since 1980s. However, the construct of a unified RPAS&RSAS for comprehensive measurement of anhedonia has never been explored. Therefore, the purpose of our study was to examine the factor structure of the unified RPAS&RSAS among undergraduates and clinical patients.
A total of 3435 undergraduates from two universities and 294 clinical patients with mental disorders had completed the Chinese version of the RPAS and the RSAS. Exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were each conducted to reveal the constructs of the RPAS and the RSAS. CFA was used to evaluate first- and second-order models for the unified RPAS&RSAS in undergraduates and clinical patients. The internal consistency and test-retest reliability of the RPAS and the RSAS were also evaluated.
EFA and CFA indicated 2-factor structures for RPAS and RSAS, with the factors being defined as anticipatory anhedonia and consummatory anhedonia. The second-order model of the unified RPAS&RSAS in the undergraduates and clinical patients both had satisfactory fit index values (Undergraduate sample: CFI = 0.901, TLI = 0.899, RMSEA = 0.055, SRMR = 0.086; Clinical sample: CFI = 0.922, TLI = 0.911, RMSEA = 0.052, SRMR = 0.078). The psychometric robustness of the RPAS&RSAS were confirmed by high internal consistency and test-retest reliability values.
The unified RPAS&RSAS with a second-order structure was confirmed in both undergraduates and clinical samples in Chinese. The construct of anhedonia was refreshed as covering physical and social domains, and each of them includes both anticipatory and consummatory components.
快感缺失是精神障碍的核心临床症状。自 20 世纪 80 年代以来，修订后的身体快感缺失量表（RPAS）和修订后的社会快感缺失量表（RSAS）已在临床和非临床样本中应用。然而，用于全面测量快感缺失的统一 RPAS&RSAS 的构建从未被探索过。因此，我们的研究目的是检验统一的 RPAS&RSAS 在大学生和临床患者中的因子结构。
共有来自两所大学的 3435 名大学生和 294 名患有精神障碍的临床患者完成了 RPAS 和 RSAS 的中文版。分别进行探索性因素分析（EFA）和验证性因素分析（CFA），以揭示 RPAS 和 RSAS 的结构。CFA 用于评估大学生和临床患者中统一的 RPAS&RSAS 的一阶和二阶模型。还评估了 RPAS 和 RSAS 的内部一致性和重测信度。
EFA 和 CFA 表明 RPAS 和 RSAS 具有 2 因素结构，这些因素被定义为预期快感缺失和完成快感缺失。统一的 RPAS&RSAS 的二阶模型在大学生和临床患者中的拟合指数值均令人满意（大学生样本：CFI=0.901，TLI=0.899，RMSEA=0.055，SRMR=0.086；临床样本：CFI=0.922，TLI=0.911，RMSEA=0.052，SRMR=0.078）。RPAS&RSAS 的心理测量稳健性通过高内部一致性和重测信度值得到确认。
在中国大学生和临床样本中均证实了具有二阶结构的统一 RPAS&RSAS。快感缺失的结构被刷新为涵盖身体和社会领域，每个领域都包括预期和完成两个组成部分。
