Validation and Measurement Invariance of the Self-Determination Inventory: Adult Report Across Intersecting Demographic Groups

Rebecca J. Townsend, Karrie A. Shogren, Sean Joo, Tyler A. Hicks, Kansas University Center on Disabilities, Department of Educational Psychology, The University of Kansas

Journal of Psychoeducational Assessment

Published online on July 13, 2026

Abstract

Journal of Psychoeducational Assessment, Ahead of Print.
Self-determination is a key predictor of positive life outcomes for people with and without disabilities across the life course. The Self-Determination Inventory: Adult Report (SDI:AR) is a self-report measure designed to assess self-determination in ...