Reports on a study which attempted to determine whether an academic contingency system that successfully modified academic performance and on-task behavior of selected target children would also lead to vicarious academic or behavioral effects in non-target children. Results show that it did not. (CMG)

Studies the effectiveness of a free-time contingency on reducing the frequency of interruptions of 28 students in a residential treatment center high class room. Implications of the findings are discussed in terms of implementation, use of peers for data collection and impact on the target behaviors. (FMW)