For each developmental domain, physical, cognitive, and social, identify two major changes or challenges associated with the following stages: adolescence, young adulthood, middle adulthood, and late adulthood. For each developmental domain, physical, cognitive, and social, identify two major changes or challenges associated with the following stages: adolescence, young adulthood, middle adulthood, and late adulthood. Stage of Development Physical Development Cognitive Development Social Development Adolescence Growth spurts and puberty The formal operational stage and egocentrism. Engaging in risky behavior and role diffusion. Young adulthood Reaching your physical peak An incredibly sharp memory and ability to learn. Intimacy vs isolation and the process of individuation. Middle adulthood Menopause, physical strength and stamina decline, andropause People become psychologically healthier as they make the transition from young adulthood to middle adulthood Finding a mate and trying to be a good parent. Late adulthood Failing senses or body parts, greying or thinning of hair Memory problems and a possible slowing down of brain function. An identity crisis or thoughts that maybe you have not made the best choices in life. .