Scholastic achievement not affected by polygamy, says study

I did a search on Google Scholar today, and found many reports of polygamy-studies that have been done. Most of these concerned polygamy in the natural world (Birds of Paradise, for example). But here's a study concerning polygamy in the human world; Scientists in Israel studied the scholastic achievement of Bedouin-Arab children, with reference to monogamy & polygamy;

http://www.ncbi.nlm.nih.gov/pubmed/10981378