The analyses described in this paper permitted an evaluation of whether capacity-building professional development practices were related to early childhood intervention practitioners' reported use of capacity-building family-centered practices. This was ascertained by structural equation modeling for two different types of family-centered practices (participatory and relational) where the two models were compared to determine the better fitting model and the sizes of effects for the relationships among the variables in the models. Results provided converging evidence that capacity-building professional development engenders practitioners' use of capacity-building family-centered practices. Implications for practice are described.