Children who heard descriptions of animals behaving like humans were less likely to attribute to a real animal a newly learned biological fact than were kids who heard realistic information. Christie Nicholson reports

The number of Americans aged 60 or more who issued advance directives governing their end-of-life care went from 47 percent in 2000 to 72 percent in 2010. Dina Fine Maron reports

Bones are filled with a viscous fluid that’s key to their function as support structures, and which could inform osteoporosis research. Dina Fine Maron reports

Moms were better able to sway a child's perception of risk when they explained the reasons an activity was dangerous and its possible consequences rather than just saying no. Christie Nicholson reports

Adults who had been members of gangs in their adolescence had poorer outcomes on a variety of measures, including physical and mental health, than those who'd never been in a gang. Christie Nicholson reports

Stan Conte, vice president of medical services for the L.A. Dodgers, advised parents and coaches of young athletes to not consider Tommy John surgery on healthy arms for the sake of improving performance. He spoke at the SABR conference in Phoenix on March 13. Steve Mirsky reports

After flu shot regulations upped Connecticut kids' vaccination rate, their hospitalization risk went down. Dina Fine Maron reports

Babies learning speech figure out what an object is by listening to others talk about what that object does. Christie Nicholson reports

The mere presence of a TV in a child's bedroom is linked with weight gain—regardless of how many hours per week a youngster watches it. Dina Fine Maron reports

Recent and easily retrievable information can overwrite the details of memories, thus altering them in your mind. Christie Nicholson reports