This study constitutes the beginning of a longitudinal investigation of phonological development of four children from birth to 2 years. Little variation was found in mean fundamental frequency. Duration, within-utterance range and variability did show developmental change. (RM)

A research project was aimed at measuring the relationship between infant vocalizations and linguistic development and determining the feasibility of using infant vocalizations as a predictor of later psychological and intellectual status. However, a method was needed to analyze the vocalizations of infants. This report describes a method used to…

Investigated developmental change in symbolic representational ability by examining infants' imitation of vocalizations, words, visible motor actions, and nonvisible motor behaviors at ages 10, 13, 17, and 21 months. Results revealed a pattern of increasing imitation, supporting the view that a domain-independent representational capacity develops…

This document reviews a number of recent studies written in French that investigate the nature of communication between 2-year-old infants and others. The review includes three parts. The first part focuses on studies aiming to constitute a behavioral catalog of the child. Characteristically, these studies offer a posteriori interpretations of…

This study showed the effectiveness of two parent education programs designed to increase young children's sustained attention to verbal stimuli. Forty 18- to 24-month-old children and their mothers served as subjects under three different conditions: Full Treatment Program of home training, home visits, group meetings for mothers, and curriculum…

Noting that young children learn to talk at different ages but within certain developmental boundaries, this document presents two charts to help parents facilitate their toddler's speech. The first chart lists characteristics to look for in a growing, healthy baby at various ages between 3 months and 24 months, and suggestions for when to talk to…

Activities of the Institute for Development of Human Resources provide the information contained in this document. This first large-scale project of the institute was in parent education of disadvantaged mothers in the north central Florida area. The purpose of the project was to investigate a way in which early intervention into the lives of…

This research bulletin includes reports of research in progress or recently completed from September 1971 through February 1972. Each entry includes information concerning the investigator, purpose, subjects, methods, duration, cooperating groups, and findings (if available). The reports are listed under several topical headings: (1) Long-Term…