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I'm not making this up.

I have read and heard alot along the lines of what you are saying, and I believe you :-)

I have also had opportunity to hear things from people who analyze the data from studies like that and from medical trials. One of the oddest tidbits I have heard involved the effects of selection on paternity testing. Specifically, when the reason for dna analysis has nothing at all to do with paternity, the rate of discovered illegitimacy is much higher than when the data is gathered specifically to test paternity. The obvious inference being that such tests are somehow more often avoided when there is some doubt in mom's mind about paternity.

The person who related this to me also mentioned in particular a very broad study over several years on tissue compatibility tests for bone transplant. In more than 70% of children whose parents were married at the time of conception, the married guy was NOT the dad. This study was in southern california, and non-white hispanics were disproportionately represented, so maybe maybe that's not a slice of american family pie, but it is certainly food for thought.

Along the lines of the cheater's advantage ... I have read many times that sexual arousal and fertility were correlated, in that any given woman will get pregnant easier when she is more aroused.

So if cheating is what thrills her then the "other guy" will always have that advantage, since you can't cheat with your husband, only on him.

I have read many times that sexual arousal and fertility were correlated, in that any given woman will get pregnant easier when she is more aroused.

I think rather that it's basic biology. When a women is ovulating, her hormones have her "in the mood" (Duh!).

Should we be surprised then, that a woman of lower moral character is more likely to get pregnant from someone other than her regular lover (especially if the new lover is more masculine in appearance)?

Oddly enough, we guys suffer from a similar physiological phenomenon - but with a twist. After a few drinks, we also get "in the mood". However, the field of acceptable "partners" tends to expand, and more often than not - downward in appearance.

Your post stands to reason.....one could also argue that middle aged couples striving to have a child and doing it all so textbook and clinical arguably lessen the woman's propensity to impregnation.

I had a college girlfriend (now an MD in Kali) who discovered she had a rather benign chronic disorder that came from some parental genetic transfer. They tested the parents during diagnosis stage and discovered viola! that neither had the gene...hence Mom was immediately on the hotseat and fessed up. It was a neighbor from the days when the dad was in the military. The folks stayed together. The girl...who was quite lovely...a Chi Omega at Ole Miss was distraught at age 20 to find she had this disease and that daddy wasn't daddy.

But...she dusted herself off and moved on and has made a good life I hear.