One finding of this massive survey was that nearly 80 percent of men and 70 percent of women had masturbated (although about a fourth to a third stated that this occurred rarely). Other responses...

One finding of this massive survey was that nearly 80 percent of men and 70 percent of women had masturbated (although about a fourth to a third stated that this occurred rarely). Other responses indicated that 19 percent of men and nearly 8 percent of women had been involved in full sexual intercourse by age 14.