Generalizability and decision studies provide a mathematical framework for quantifying the stability of a given number of measurements. This approach is especially relevant to the task of obtaining a representative measure of communicative behavior in young children and supports an alternative to the debate regarding which type of assessment…

Previous work by our group has shown that infant emotional vitality (EV), the lively expression of shared emotion both positive and negative, predicts cognitive and language abilities in toddlerhood. Specifically, infants who demonstrated a pattern of high emotional expression combined with high bids to their caregivers, fared significantly better…

Two staff members working in different preschools received training in the form of instructions, modeling, immediate feedback, and social reinforcement of good performance. Effects of training were assessed with a multiple baseline ABCDCDCD design. Correct use of basic behavioral teaching techniques increased from 16-31% to 92-95% and the rate of…