Evidence to validate the use of fixed-time (FT) reinforcer delivery (i.e., noncontingent reinforcement) with typically developing populations has been relatively rare in the behavioral literature. In those studies that have provided validation, reinforcer delivery schedules appeared to be prohibitively dense for sustained implementation of…

The validation of the competency based curriculum (CBC) of the District of Columbia Public Schools, prior to full scale implementation, is described. The CBC includes English, language arts, and science instruction in grades one through nine, and is based upon the demonstrated learning of specific behavioral objectives in the basic skills. The…