Adulthood is also called sexual maturity. It is the time when the individual reaches reproductive age or puberty. This is when secondary sexual characters start developing in both males and females. Hence, physical maturity is reached around the age of 13. Coming to psychological terms of maturity, it occurs when an individual responds to circumstances in an appropriate manner. Again, it is very subjective and there is no specific age to attain this! To get a good insight on what your peers think of adulthood and maturity, read on!