A new study shows that dads respond differently to daughters and sons. When they're with their daughters, dads:

• Sing more to them.

Speak more openly about emotions, including sadness.

Respond more quickly to cries.

Use more words relating to the body (belly, foot, tummy).

Use more analytical language (all, before, much).

• Avoid rough-and-tumble play.

Source: Jennifer Mascaro, Emory University and the American Psychological Association