Briefly describe the Analysis-of-Variance approach to content validity evidence.

What will be an ideal response?


This method builds on the methods proposed by Anderson and Gerbing (1991) and Schriesheim et al. (1993) and asks panel members to rate each item according to the extent to which it is consistent with a construct definition provided (i.e., from 1 “not at all” to 5 “completely”) (Hinkin & Tracey, 1999). A between-subjects design is implemented in which each group of raters is given all items but only one construct definition (although the items provided represent several constructs). The results are analyzed using principal component analysis (as in the Schriesheim et al., 1993, method). Then an ANOVA is used to assess each item’s content validity by comparing the item’s mean rating on one construct to the item’s ratings on the other constructs. A sample size of about 50 panel members seems adequate for this type of analysis.

Legal Studies & Paralegal

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