Today, vast research evidence exists supporting the importance of social skills across the lifespan. Although no consensus of the definition of the concept exist, commonly social skills are explained as social behaviors that lead to positive relationships. This book begins with a chapter on the concept of social skills and relating concepts like social competence and social emotional learning in preschool children. The following chapter presents the Social Perception Training program and associated risk factors in young children with autism. Chapter Three discusses teaching strategies aimed at developing preschool social-emotional competency within a balanced pre-literacy approach. Chapter Four compares the message strategies of parents and preschool teachers for persuading young children and reveals the effect of parenting and teaching experience on strategies adopted. Chapter Five analyses the demographic and clinical profile of pre-school children referred to a Child Development Centre (CDC) of a North West of England Local Authority. The last chapter studies total body potassium, total body water, creatinine excretion of infants and preschool children longitudinally and establishes changes in relation to growth.