From the above article... > Scientists were so unwilling to believe that human women were different from songbirds that some suggested the discrepancy between

From the above article... > Scientists were so unwilling to believe that human women were different from songbirds that some suggested the discrepancy between expected and actual rates of cuckoldry was a recent development caused by birth control. It would be quite interesting to do a study on modern social groups where birth control isn't yet ubiquitous. It could be fairly easy to do this kind of study covertly and anonymize the source so as to not risk throwing it into disarray if the results come back with high rates of cuckoldery.