id author title date pages extension mime words sentence flesch summary cache txt zw12z31997h Carolyn Anna Heitzmann An Item Response Theory Approach to the Examination of the Construct of Self-efficacy for Coping for African American and White Persons with Cancer 2010 .txt text/plain 142 6 45 DIF was tested across groups of African Americans (N = 245) and Whites (N = 407) with cancer. In this project, an Item Response Theory (IRT) approach to examining Differential Item Functioning (DIF) was conducted on the Cancer Behavior Inventory (CBI), a 33-item measure of self-efficacy for coping with cancer. cache/zw12z31997h.txt txt/zw12z31997h.txt