During early adulthood stage an individual reaches physical maturity by the age of This is known as maturation. Adults have reached their peak level of physical strength and their full height and weight by this time. As the adult reaches the end of this life stage, stamina and strength start to slowly decline. The early adulthood stage is when women are most likely to become pregnant. Pregnancy and lactation are key characteristics of early adulthood.
2. Emotionally mature adults are experimental in their behavior.
A year-old I know stood in line at a custom bowling supply store. About 6-foot-2 and pounds, already with a man's voice and beard, he certainly didn't look his age. It was hardly surprising when the clerk - another young man - asked casually, "Where do you go to college? Looking both a bit proud and a bit chagrined, the first youth admitted that he was but a lowly high school freshman. I've known this year-old long enough to have observed similar responses. He was mistaken for a college freshman even in eighth grade. And because he tends to be rather quiet and somewhat sober, he can often pull of such a charade, at least until people get to know him. For the fact is that once someone gets past the opening exchange of any conversation with him, they realize that he is in most other ways a pretty normal year-old boy - albeit a rather large one. Over the years, as both a counselor and a parent, I've known kids who matured physically much more quickly than they matured cognitively, emotionally, socially or spiritually.
Biologically , an adult is an organism that has reached sexual maturity. In human context, the term adult additionally has meanings associated with social and legal concepts. In contrast to a " minor ", a legal adult is a person who has attained the age of majority and is therefore regarded as independent, self-sufficient , and responsible. The typical age of attaining legal adulthood is 18, although definition may vary by legal rights and country. Human adulthood encompasses psychological adult development. Definitions of adulthood are often inconsistent and contradictory; a person may be biologically an adult, and have adult behavior but still be treated as a child if they are under the legal age of majority. Conversely, one may legally be an adult but possess none of the maturity and responsibility that may define an adult character. In different cultures there are events that relate passing from being a child to becoming an adult or coming of age. This often encompasses the passing a series of tests to demonstrate that a person is prepared for adulthood, or reaching a specified age, sometimes in conjunction with demonstrating preparation. Most modern societies determine legal adulthood based on reaching a legally specified age without requiring a demonstration of physical maturity or preparation for adulthood.
Get involved in our campaigns and help ensure young people's health and rights. Also avilable in [ PDF ] format. Human development is a lifelong process of physical, behavioral, cognitive, and emotional growth and change.