This collection of four papers focuses on selected issues in early childhood education. The first paper "The Advisory Approach to Inservice Training" presents the highlights of a year's experience with the advisory (on-site consultant) approach to the inservice education of elementary school teachers. A major objective of this pilot study was to be able to answer questions about what it is like to be an advisor, what problems arise in the course of using this approach, and how an advisory system should be designed. The second paper, "Developmental Stages of Preschool Teachers" suggests four dimensions of training for preschool teachers: (1) developmental stages of the teacher; (2) training needs of each stage; (3) location of the training; and (4) timing of training. In the third paper, "The Enabling Model for Early Childhood Programs" the broad dimensions of the Enabler Model have been outlined. Rather than offering a community a predesigned experimental curriculum, the Enabler Model provides regular on-site support and guidance to assist local communities in the formulation and implementation of their own preschool programs. The last paper, "Condition with Caution", provides a paradigm in terms of phenotype and genotype for the consideration of contrasting explanations of behavior. (CS)