Having a narcissistic parent doesn't mean you're going to turn out that way, too. GraphicaArtis/Corbis hide caption

itoggle caption GraphicaArtis/Corbis

You want that soda bottle. But it may not be because you crave soda. It might just be that you love the idea of wrapping your fingers around its enticing shape. Ariel Zambelich/NPR hide caption

itoggle caption Ariel Zambelich/NPR

Residents of ShantiNiketan, a retirement community near Orlando, Fla., walk in a Hindu religious procession. Courtesy of ShantiNiketan Inc. hide caption

itoggle caption Courtesy of ShantiNiketan Inc.

If 13 episodes in a row with Piper and Crazy Eyes sounds like your dream day, social scientists want to talk with you about your habits. Paul Schiraldi/NetFlix/AP hide caption

itoggle caption Paul Schiraldi/NetFlix/AP

Think of human relationships as entanglements. How do they bind you; how do they reveal who you really are? Daniel Horowitz for NPR hide caption

itoggle caption Daniel Horowitz for NPR

Opening statements are delivered in June 1990 in the Central Park rape trial in New York in this artist's rendering. The defendants — including Yusef Salaam (from left), Antron McCray and Raymond Santana, shown here — were convicted and imprisoned in part on what were later found to be false confessions. A new study shows it's surprisingly easy to implant memories of committing a crime. Marilyn Church/AP hide caption

itoggle caption Marilyn Church/AP
Daniel Horowitz for NPR

Martin Pistorius sometime between 1990 and 1994, when he was unable to communicate. Courtesy of Martin Pistorius hide caption

itoggle caption Courtesy of Martin Pistorius

U.S. soldiers at Long Binh base in South Vietnam line up to give urine samples at a heroin detection center before departing for the United States. About 20 percent of soldiers said they were addicts, but most didn't continue drug use back home. AP hide caption

itoggle caption AP