Well, first we must consider the source of these data.
How credible is Redbook? More credible than Operea or Geraldo?
I think women in the 1950's and 60's were just less prone
(take that with a grain of salt) to report that they had
sexual encounters before marriage. Ku pun man an i ra
(to maintain my credibility on KIDS I must use an occasional
Korean expression), women today may be OVER-REPORTING on
this because it is "the thing to do."
Finally, as an astute student of these matters, what would be the
equivalent odds for a representative sample of Korean women
(and men-if such data exist) during the same time periods.
I was in Korea duirng 1963-64....I will be very interested
to see your "tae dap."
Pang