AP PSYCHOLOGY

Detailed explanation-1: -Developmental psychologists study human growth and development over the lifespan, including physical, cognitive, social, intellectual, perceptual, personality and emotional growth. Developmental psychologists working in colleges and universities tend to focus primarily on research or teaching .

Detailed explanation-2: -Developmental psychologists study how people grow and adapt at different life stages. They conduct research designed to help people reach their full potential. For example, babies who are not walking by 15 months may be demonstrating a developmental delay or signs of a more serious health condition.

Detailed explanation-3: -One of them, Erik Erikson developed a model of eight stages of psychological development. He believed that humans developed in stages throughout their lifetimes and that this would affect their behaviors.