What is it like to be a gifted adolescent girl in today's world? Situated in the context of a five-session group activity, called Gifted+Grounded, the purpose of this qualitative inquiry study was to better understand how two groups of gifted adolescent girls (Group 1 = 11, Group 2 = 14; Ages 13-16) made meaning of being "gifted." The…

The standardization method for assessing unexpected differential item performance or differential item functioning is introduced. Findings of five studies are summarized, in which the statistical method of standardization is used to look for unexpected differences in item performance across different subpopulations of the Scholastic Aptitude Test.…

A theorem is presented that describes conditions under which measurement invariance is consistent with predictive invariance for the linear case. These two forms of invariance are shown to be inconsistent under realistic conditions, and the duality is illustrated with simulated data. Implications for group differences research are discussed. (SLD)