Assessing the Differential Effects of Known and Mystery Rewards in a Preschool-Based Group Contingency

Group contingencies have been used successfully to modify a variety of behaviors for children with diverse characteristics across multiple settings. However, these interventions have not been applied to increase social interactions (SI) between typically developing children and those with multiple or severe disabilities (MSD). Furthermore, little research has been conducted to examine whether differential outcomes are associated with the type of reward used (known or mystery). The purpose of this study was to examine the differential effects of known versus mystery rewards on the SI of preschool children with and without MSD within an independent group contingency. The findings indicated that although there were no differences in levels of SI between reward types, both were superior to the baseline condition and were viewed as socially valid by classroom teachers and naive raters. In addition, this study was conducted with high methodological quality exceeding that of previous group contingency research conducted in preschool settings and of other studies examining the differential effects of known and mystery rewards. The results provide meaningful information regarding practices that support children with MSD and add to the group contingency literature.

Tootling With a Randomized Independent Group Contingency to Improve High School Classwide Behavior

The present study examined the effects of tootling, a peer-mediated positive behavior intervention, on students’ classwide disruptive and academically engaged behavior in three general education high school classrooms. A withdrawal design was used to assess the effects of the intervention. Students wrote tootles anonymously on paper slips and placed them into a marked container. A randomized independent group contingency was used to reward students. At the end of the class period, teachers randomly drew three of the submitted tootles and rewarded students about whom the tootles were written. Teachers also randomly drew the names of two students who submitted a tootle and rewarded them as well. All three classrooms displayed decreases in classwide disruptive behavior and increases in academically engaged behavior during intervention phases. Effect size calculations for both disruptive and academically engaged behavior indicated very large overall effects. The results of this study suggest that a modified tootling procedure utilizing a randomized independent group contingency can be an effective intervention for teachers to improve the classwide behavior of students in high school classrooms. Teachers found the intervention at least moderately socially valid and students rated it highly acceptable.