The purpose of the study was to compare the differential effects of response independent and response-dependent criteria used to determine when to increase to the next delay interval in the progressive time delay (PTD) procedure. An adapted alternating treatments design was used to evaluate the relative efficiency of three variations of the PTD…

The attitudes and opinions of special education teachers may potentially reveal insight as to how and why teachers choose to include sex education in their curriculum for self-contained special education classrooms designed to serve students with developmental disabilities. The main objective in developing this study was to gather information…