Final answer:
Biological and physical development is beneficial in Developmental psychology and Cognitive psychology, helping gain insights into various psychological processes.
Step-by-step explanation:
Biological and physical development is beneficial in the fields of Developmental psychology and Cognitive psychology. Developmental psychology focuses on the scientific study of development across a lifespan, including physical changes associated with aging, cognitive skills, moral reasoning, and social behavior. Cognitive psychology, on the other hand, studies human thinking and behavior, which includes the cognitive development that occurs as a result of physical and biological changes. Both fields recognize the importance of understanding biological and physical development in order to gain insights into various psychological processes.