Dating in adolescence
Being “in love” co-occurred with a reciprocal on-going relationship about half the time.Boys fell in love earlier and more often than girls, and both genders seemed to employ an increasingly narrow prototypical conception of being “in love”.However, the secondary nature of iodine host minerals, combined with the inherent precision of I–Xe, were responsible for a large database of “whole-rock” I–Xe ages that were not easily interpreted.As this problem evolved historically, doubts were cast upon the viability of the I–Xe system as a chronometer which persisted until it was tested against other chronometers in single-mineral systems.
The short half-life of I gives it exceptional precision.
Persons 18 and over are considered adults in our society.
Of course, there are some who will try to act older than their years.
You can also see how your friends or relatives treat their kids.
You cannot say the same thing about learning to talk with teenagers (adolescents).