News your connection to The Boston Globe  Who's your daddy?
Could 10 percent of men really be deceived about the paternity
of the children they're raising? Evolutionary psychologists want
to know.  (Greg Klee/Globe Staff Illustration)  MY 2-YEAR-OLD
son sometimes points to the mailman and gleefully shouts,
``Grandpa!" I am reasonably sure that this is because the
mailman, like my own father, has white hair. Yet reading the
work of evolutionary psychologists can sow doubts in a man's
mind.  For the past two decades, these scientists have been
suggesting that roughly one in 10 children born within
monogamous relationships was fathered by someone besides the man
who thinks he's the father. A 2002 article in Nature Reviews
Genetics was even more alarming, suggesting that the figure
could be as high as 20 percent.  Could so many men really be
deceived about the origins of their children? Kermyt G.
Anderson, an anthropologist at the University of Oklahoma, has
been skeptical about the figure since he was in gradua