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Norris, Megan; Lecavalier, Luc – Journal of Autism and Developmental Disorders, 2010
Exploratory factor analysis (EFA) is a widely used but poorly understood statistical procedure. This paper described EFA and its methodological variations. Then, key methodological variations were used to evaluate EFA usage over a 10-year period in five leading developmental disabilities journals. Sixty-six studies were located and evaluated on…
Descriptors: Psychological Studies, Developmental Disabilities, Factor Analysis, Research Methodology