Abstracts are presented for 140 masters' theses and doctoral dissertations in the area of family relations and child development completed in 1966 at 32 institutions. They are grouped according to the age of the subjects used in the investigations. Child development studies are classified as infant and young child, elementary school age, adolescent, and miscellaneous; family relations studies are classified as adolescent, adults, the aged, family and parent-child interaction, and program development. An author index is included. (FP)