Human growth and behavior means the potential and expressed capacity for physical, mental, and social activity during the phases of human life. Individuals, like other animal species, have a typical life course that consists of successive phases of growth, each of which is characterized by a distinct set of physical, physiological, and behavioral features. Social workers work with people so understanding, human behavior is essential to be an effective social worker. Human growth and behavior course is designed to acquaint the students with developing concepts in psychology and to give them an understanding of the basic dynamics, which underlie human behavior at various stages in the lifespan. The knowledge of human behavior will contribute to the students as a future practitioner. They will understand their clients and translate into better assessment of their client’s needs. Moreover, it helps social workers to understand that every person is a little bit different, thus human development tends to follow a remarkably predictable pattern, and hence they will know what's typical at certain ages and stages.