The General Functioning 12-item subscale (GF12) of The McMaster Family Assessment Device (FAD) has been validated as a single index measure to assess family functioning. This study reports on the reliability and validity of using only the six positive items from the General Functioning subscale (GF6+). Existing data from two Western Australian studies, the Raine Study (RS) and the Western Australian Child Health Survey (WACHS), was used to analyze the psychometric properties of the GF6+ subscale. The results demonstrated that the GF6+ subscale had virtually equivalent psychometric properties and was able to identify almost all of the same families who had healthy or unhealthy levels of functioning as the full GF12 subscale. In consideration of the constraints faced by large-scale population-based surveys, the findings of this study support the use of a GF6+ subscale from the FAD, as a quick and effective tool to assess the overall functioning of families.
Keywords: Bradburn Scale; Family Assessment Device; Family Functioning; General Functioning; McMaster Model; Psychometrics; escala de Bradburn; funcionamiento familiar; funcionamiento general; herramienta de evaluación familiar; modelo de McMaster; psicometría; 一般功能; 家庭功能; 家庭评估策略; 布莱德恩尺度; 心理测量学; 麦克马斯特模型.
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