普遍性适应不良量表的简化及信效度研究

目的 对普遍性适应不良量表(General Maladjustment Scale,Gm)进行项目分析并研制简式普遍性适应不良量表.方法 对3767名新兵同时进行Gm和症状自评量表(SCL-90)测试,对Gm各项目进行难度和鉴别度分析,各项目分与Gm总分的相关分析,根据分析结果筛选出部分条目组成简式量表.计算原量表及简式量表的Cronbach's α系数,以SCL-90各因子分为效标,考察原量表及简式量表的效标效度.结果 原量表各项目的难度在0.03～0.72之间,小于0.2的项目有21个.鉴别度指数在-0.19～0.45之间,小于0.3的项目有21个.各项目分与Gm总分的相关系数在-0.17～0.48之间,小于0.3的项目有14个.保留质量较高的16个项目组成简式量表.原量表和简式量表的Cronbach's α系数分别为0.713和0.700.原量表总分及简式量表总分与SCL-90总分及各因子分均显著正相关,相关系数均在0.40以上.简式量表总分与原量表总分显著相关,相关系数为0.914.结论 原量表及简式量表均具有较好的信度和效度.

Study on the short version of general maladjustment scale and its reliability and validity

Objective To conduct item analysis on General Maladjustment Scale (Gm) and to develop a short-versioned scale.Methods Gm and Symptom Checklist 90 (SCL-90) were administered to 3767 recruits.difficulty and discrimination of each item of Gm were calculated,correlation between item score and total score was analyzed,short-versioned Gm was developed based on the results of item analysis.Cronbach's α coeffieient of the original scale and the short-versioned scale was calculated, criterion validity was analyzed using SCL-90 as the validity criterion.Results Difficulty of the original scale was from 0.03 to 0.72.21 items'difficultv was less than 0.20.Discrimination index was from -0.19 to 0.45.21 items'discrimination index was less than 0.30.Corre.lation coefficient of the item score and the total score is from -0.17 to 0.48.21 items'correlation coefficient was less than 0.30.The short-versioned scale was made up of the 16 items with better quality.Cronbach's α coeffi.cient of the original scale and the short-versioned scale was 0.713 and 0.700.respectively.Both the total score of the original scale and the short-versioned scale were significantly correlated with the scores of SCL-90,and all the correlation coefficient were above 0.40.The correlation coefficient between the score of the short-versioned scale and that of the original scale was 0.914.Conclusion Both the original scale and the short-versioned scale have a higher reliability and good validity.