Abstract
The purpose of this study was to extend the limited research on group stimulus preference assessment (SPA) procedures. The study occurred in two sections of a middle school special education classroom and included 20 students with multi-categorical disabilities. A paired stimulus group SPA was used to identify a preference hierarchy for each class, and results were validated using single case designs in which baseline conditions were compared to group contingency conditions with alternating sessions of the highest-preferred (high-p) and lowest-preferred (low-p) consequences. Both group contingency conditions increased the percentage of students prepared for class relative to baseline; however, consistently higher levels of students were prepared for class during high-p sessions. Student responses on a daily quiz were similar in both conditions, but social validity surveys indicated students felt the most motivation and enjoyment during high-p sessions. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s40617-024-01003-2.