“…Radloff [1977], in an initial exploratory factor analysis (EFA), identified and conceptualized four factors as independent subscales: 1) Depressed Affect (e.g., blues, depressed, lonely); 2) Positive Affect (e.g., good, hopeful, happy); 3) Somatic and Retarded Activity (e.g., bothered, sleep, get going); and 4) Interpersonal (e.g., unfriendly, dislike). Although several EFA investigations have been conducted [e.g., Beals et al, 1991;Callahan and Wolinsky, 1994;Clark et al, 1981;Devins et al, 1988;Joseph and Lewis, 1995;McCallion and Kolomer, 2000;Thorson and Powell, 1993], uncertainty remains regarding the CES-D's precise factor solution. Factor structure has varied between a two-factor [Edman et al, 1999;Manson et al, 1990], a three-factor [Beals et al, 1991;Kuo, 1984;Stroup-Benham et al, 1992;Ying, 1988], a five-factor [Thorson and Powell, 1993], and a sevenfactor solution [Callahan and Wolinsky, 1994].…”