An alternating treatments design was used to evaluate and compare the effects of two interdependent group contingencies on the academic performance, on-task behavior, and disruptive behavior of eighth-grade students in a social studies class. All students were enrolled in a self-contained alternative school for students with behavior problems.…

Two studies investigated the accuracy of eight different interval-based group observation methods that are commonly used to assess the effects of classwide interventions. In Study 1, a Microsoft Visual Basic program was created to simulate a large set of observational data. Binary data were randomly generated at the student level to represent…