One might have expected an effect of instrumentation for the relationship of dependency with agreeableness. Quite a number of studies have reported positive associations of agreeableness with dependency using methodologies not included within the current meta-analysis, such as clinicians' ratings of prototypic cases (Samuel & Widiger, 2004), researchers' descriptions of prototypic cases (Lynam & Widiger, 2001), clinicians' descriptions of actual cases (Blais, 1997), clinicians' ratings of case vignettes (Sprock, 2002), students' ratings of trait terms within the English language (Coker, Samuel, & Widiger, 2002), and other methodologies or measures not included in the current meta-analysis (e.g., Bagby et al., 2001; Costa & McCrae, 1990; Mongrain, 1993; Pincus, 2002; Wiggins & Pincus, 1989; Zuroff, 1994). There was one study included in the current meta-analysis that did obtain a substantial association of dependency with facets of agreeableness and this study used a relatively unique instrument (i.e., the SWAP-200; Shedler, 2002). However, as only one FFM-SWAP-200 study has been published (Mullins-Sweatt & Widiger, 2007a), a calculation of individual effect sizes for this instrument was not conducted.
