Stanley Coren
Related content from around the web:
Children who are mixed-handed are twice as likely to have language difficulties, scholastic problems and Attention Deficit Hyperactivity Disorder ...
http://www.ottawacitizen.com/health/women/hand+dealt+matter/2482488/story.html
http://www.ottawacitizen.com/health/women/hand+dealt+matter/2482488/story.html