Washington: When a family finds itself in tough economic times, parents are likely to be more financially generous to a daughter than to a son. And the reason has to do with something parents often tell their adult children – they really want grandchildren.

Ann Arbor: A study of nearly 1,000 teens found that sexually active obese adolescents were significantly less likely to use contraception than normal weight peers, putting them at higher risk of unintended pregnancy.

Ann Arbor: Taking a nap may be an effective strategy to counteract impulsive behavior and to boost tolerance for frustration, according to a University of Michigan study.

New York: We can alter our facial features in ways that make us look more trustworthy, but don’t have the same ability to appear more competent, a team of New York University psychology researchers has found.

Lincoln: It takes 10,000 hours of dedicated practice for a person to become a world-class talent in a given field, or so said writer Malcolm Gladwell in a 2008 book.

Washington: Children living in low-income households who endure family instability and emotionally distant caregivers are at risk of having impaired cognitive abilities according to new research from the University of Rochester.