In 1987, Kuo Ming-hsueh surveyed the sexual behavior of fifth-year technical college students and found that sexual activity of all types had clear increases since the surveys by Wang Hung-ching in 1978. Especially worthy of attention is that the percentage of boys having had sexual intercourse increased from 20.69 percent to 55.15 percent, while the percentage for girls went up from 3.96 percent to 6.86 percent.
郭明雪在七十六年底調查台北市五專五年級學生約會行為，並與王鴻經在六十七年底收集資料比較，發現除了拉手外，其餘的性行為都有顯著的增加，尤其值得注意的是：男生的性交行為由 20.69％增至 55.15％，女性則由 3.96％增至 6.86％，增加的比率不可說不大。