Convergent Validity of the Self-Determination Inventory: Student Report

Abstract

This study examined the convergent validity of scores on the Self-Determination Inventory: Student Report, a newly developed assessment of self-determination aligned with Causal Agency Theory with related assessments associated with hope theory (Children’s Hope Scale; CHS), self-determination theory (Perceived Choice and Awareness of Self Scale; PCASS, formerly the Self-Determination Scale), and action-control theory (Control and Means-End Interview; CAMI) in adolescents with and without disabilities of varying race/ethnicities. Measurement invariance was established across the groups, but differences in the patterns of correlations across disability and racial/ethnic groups were found. Generally, as hypothesized, the relationships between the assessments were moderate to high, except for the perceived choice subscale of the PCASS. Implications for future research and practice are discussed.