This book is a detailed, well-written, and well-documented account of a short-term longitudinal study of the reactions of ten thirteen to twenty-four-months old children who were separated from their families for varying lengths of time (twelve to one hundred forty-eight days). The study was carefully planned and executed. Ten nonseparated children of comparable age were used as a control group. In addition to family background, past history, and an assessment of the mother-child relationship obtained before and during the time of contact, systematic data (coded observations of the child in either an everyday or doll-play setting) and clinical descriptions were made on the children at the time of actual separation, during the time of separation, and up to the twentieth week following reunion.