The twenty-fourth volume of this acclaimed series presents 30 articles in seven major areas: developmental studies; stress and vulnerability; language studies; temperament studies; clinical syndromes; diagnosis and treatment; and psychosocial issues. The articles are of two types: original work that holds promise of furthering progress in the study of the child, and review pieces that offer an insightful systematic perspective on a significant area. Each article appears in its entirely with all original tables, figures and bibliographies.