The Strengths and Difficulties Questionnaire (SDQ) is a widely used mental health screening instrument developed in the United Kingdom that measures five proposed factors. U.S. research, however, historically supports a slightly different three-factor solution. The present study reports results using both principal factor analysis (PFA) and confirmatory factor analysis (CFA) on data from multiple waves of an ongoing mental health project in middle school aged children. PFA analyses suggested three, five and six-factor solutions with substantial cross-loadings from items. CFAs showed alternative five and six-factor solutions fit well when items guided by the initial PFA were allowed to cross-load. Neither the original five-factor nor popular three-factor models fit well without allowing cross-loading items. These data suggest that popular SDQ three and five-factor model may have variable fit in certain U.S. populations.

优势与困难问卷（SDQ）是英国开发的一种广泛使用的精神健康筛查工具，可测量五个建议因素。但是，美国的研究历史上一直支持稍微不同的三因素解决方案。本研究报告了使用主因子分析（PFA）和验证性因子分析（CFA）的结果，这些数据来自正在进行中的中年儿童心理健康项目的多次浪潮数据。PFA分析建议采用三因素，五因素和六因素解决方案，并从物品中产生大量交叉装载。当允许由初始PFA引导的项目交叉装载时，CFA显示替代的五因素和六因素解决方案非常合适。如果不允许交叉装载物品，则原始的五因素模型或流行的三因素模型都无法很好地拟合。