Got this interlibrary loan after it appeared in my alumni magazine. this was a great and fascinating read. And if being a member of the church of Jesus Christ of Latter-day Saints wasn't enough to persuade me to be a virgin until I got married this book would have. I want BElla to read it as a teenager, although when I mentioned this to her, she balked.
Basically although it was a study to just examine the social norms and changes that are taking place in the meeting, mating, and marrying of Americans it was a persuasive enough arguement about all the psychological factors I'd rather avoid. Higher rates of depression with earlier sex, higher number of partners, etc... REally a great read if you like non-fiction.