Answer: Developmental
Explanation: Developmental psychology is a branch of psychology which examines changes in human over time. Developmental psychology is aimed at investigating why certain developmental variations occur in human, how these variations occur and how these changes are related to time and age. Developmental psychology examines different developmental patterns through the one's entire life span including physical and psychological variations while also taking into account the effect of nature and environment on human development. Development of motor, cognitive, emotional, language skills are examined in developmental psychology.