The Feasibility of First Step to Success with Preschoolers.

The primary purpose of this study was to examine feasibility of the preschool version of the First Step to Success (FSS) intervention. Toward this end, the following four research questions were addressed: (1) To what extent was the intervention implemented with integrity? (2) To what extent do teachers and parents perceive the intervention to be socially valid? (3) To what extent were teachers and parents satisfied with the intervention? and (4) To what extent was the intervention effective in reducing problem behavior and improving social skills? Twelve students participated in the study. Treatment integrity, social validity, and satisfaction results were analyzed at the aggregate level, and a reliable change index was calculated at the case level for primary outcome measures to assess the potential efficacy of the intervention. Fidelity data suggest the preschool version of the intervention can be implemented with acceptable integrity by coaches and teachers in preschool settings. Social validity outcomes suggest parents' perceptions of the program's goals, procedures, and outcomes were extremely favorable, and social validity from the teacher perspective was acceptable. The results provide initial evidence that participating in the preschool version of the FSS intervention improves children's social skills and decreases problem behavior.