The Edward Westermarck reference article from the English Wikipedia on 24-Apr-2004
(provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Edward Westermarck

Edward Westermarck (1862-1939) was a Finnish philosopher and sociologist. Among other subjects, he studied exogamy and the incest taboo.

He is known for first noting the Westermarck effect in which infants raised together are unable to form sexual feelings for one another as adults, regardless of their genetic relationship.