Developmental psychology involves the study of the factors that shape human behavior, from the prenatal stage to adulthood. The developmental psychologist can focus their attention on an aspect of problems, including those relating to the development of thought or perception or may focus their attention on a specific period of life, such as childhood or adolescence. In this way, the psychology of children or adolescents is part of the general branch of developmental psychology. Evolutionary psychology and developmental psychology study the physical, mental and changes that occur in human beings over time in the ...