Adult development encompasses the changes that occur in biological and psychological Erik Erikson and Carl Jung proposed stage theories of human development that encompass the entire life span, and emphasized the potential for . Hearing also becomes impaired in midlife and aging adults, particularly in men.
Development of the human body is the process of growth to maturity. The process begins with fertilization, where an egg released from the ovary of a female is penetrated by a sperm cell from a male. Briefly, embryonic development have four stages: the morula stage, the blastula stage, the gastrula stage, and the neurula.
In the early stages of life—from babyhood to childhood, childhood to When concerns arise about a specific young adult's development.