抑郁意象特征因子结构探索

 目的 探索抑郁意象特征问卷的因子结构及有效性,为抑郁情绪判定和测量提供依据。方法 通过文献分析、专家小组讨论确定抑郁意象特征因子56项并编制初测问卷施测于109名被试,对初测数据进行项目分析和探索性因素分析,确定22个抑郁意象特征的正式施测问卷,并施测于另一组109名被试,对数据进行因子选取及主成分分析,而后进行方差最大正交旋转法进行因子旋转,获得主成分数目特征值>1的为因子数目,进行KMO和Bartlett球形度检验分析。结果 在探索性因素分析中,抽取12个项目中特征值>1的因子4个:情绪低落、乐感降低、精力减退和能力下降,共解释总方差的55.18％。验证性因子分析结果为:近似误差均方根(RMSEA)为0.057、χ²值与自由度之比(χ²/df) 为2.134、拟合优度指数(GFI)为0.935、比较拟合指数(CFI)为0.912、不规范拟合指数(NNFI)为0.896。结论 由12个抑郁意象特征问卷构建的四因子结构,数据对模型拟合较好,验证抑郁意象特征四因子模型是合理的,可以作为抑郁情绪判定和测量的依据

Analysis of factor structure of imagery characteristics of depression

Objective To explore the factor structure and effectiveness of questionnaires on imagery characteristics of depression.Methods Through literature review and consultation with an expert group,the initial questionnaire on imagery characteristics of depression was designed.The draft questionnaire had 56 items of depression imagery,which was answered by 109 recruits.After analysis of the items and exploratory factors,a formal questionnaire that contained 22 items of imagery characteristics of depression was worked out,which was answered by 109 recruits before analysis of exploratory and confirmatory factors was made.Results Based on the exploratory factor analysis,four factors whose Eigen value exceeded 1 were extracted from the 12 items,including depressed mood,reduced sense of happiness,energy decline,and capacity decline.Those four factors accounted for 55.18％ of the total variance.Confirmatory analysis showed thatx2/df was 2.134,root mean square error of approximation (RMSEA) was 0.057,and the comparative fit index (CFl),goodness-of-fit index (GFI),and non-normed fit index (NNFI) was 0.912,0.935,and 0.896,respectively.Conclusions The four-factor structure has been constructed out of the twelve-item questionnaire on imagery characteristics of depression.