This speech offers a guide to identifying and teaching high-risk children, those who exhibit a lag in development severe enough to be a handicap in learning. The high-risk children focused on are those whose developmental lag is frequently not recognized until they fail in school. The two major areas of neurodevelopmental learning disorders are in…

Factor analysis of 25 rating scales from Bayley's infant behavior record were performed for a sample of about 300-400 infant twins tested one or more times between 3 and 24 months of age. The analyses provided five major and two minor factors that were considerably consistent at all ages. (Author/DB)