“Media literacy is crucial, for kids and parents,” says Mary Alvord, PhD, a psychologist in Rockville, Maryland, and past president of APA Div. 46 (Society for Media Psychology and Technology). More than 90 percent of children in the United States have a digital presence before their second birthday, according to a 2010 study by internet security firm AVG. Such posts run the gamut from birth announcements on Facebook to detailed descriptions of children’s behavior problems on parenting blogs.

Consider this puzzle: An antiquities dealer is deciding whether to purchase a coin. The coin is made of bronze, with an emperor’s head engraved on one side and the date 544 B.C. stamped on the other. The dealer quickly determines the coin is fake. How?

Depression is not only the most common mental illness, it’s also one of the most tenacious. Up to 80 percent of people who experience a major depressive episode may relapse. Drugs may lose their effectiveness over time, if they work at all.