Recent research in multidimensional item response theory has introduced within-item interaction effects between latent dimensions in the prediction of item responses. The objective of this study was to extend this research to bifactor models to include an interaction effect between the general and specific latent variables measured by an item.…

Psychologists have become increasingly interested in the intra-individual variability of psychological measures as a meaningful distinguishing characteristic of persons. Assessments of intra-individual variability are frequently based on the repeated administration of self-report rating scale instruments, and extreme response style (ERS) has the…

School counselors influence the referral process and delivery of educational recommendations. Their perceptions of students' cognitive abilities are likely to influence their referral decisions as well as their interpretation and use of the results of psychological testing. The Cattell-Horn-Carroll, (CHC), model of intelligence, is gaining…