Much is known about preschool children's mathematics learning and the role of play in that learning. Many early childhood educators are quite adept at observing and documenting the mathematics learning of the children in their settings. These teachers "notice" the children's mathematics but they are not the only ones to…

The purpose of this study was to test the effects of a peer-yoked contingency on the induction of observational performance, observational acquisition, and the Naming capability. In Experiment I, three male kindergarten and first grade students diagnosed with disabilities were selected as target participants because they had the listener component…