Are dads hardwired to treat sons and daughters differently?

Dads sing more to daughters and are more supportive of their feelings, but they play more aggressively with sons and are more likely to use words suggesting achievement —and recordings and brain scans prove it. Fifty-two dads clipped a small computer to their belts for 48 hours. The device randomly turned itself on to record daily interactions between the dads and their toddlers. They also had brain scans while they viewed photos of their kids. All this showed th at dads respond to their toddler sons and daughters differently.
Source: Dental Abstracts - Category: Dentistry Tags: Extracts Source Type: research