Mental Health

Oliver Sacks: Hallucinations

In his latest book Hallucinations, neurologist Oliver Sacks collects stories of individuals who can see, hear and smell things that aren't really there--such as strange voices, or collages of unrecognizable faces--and explores the disorders and drugs that can produce such illusions. This interview was originally broadcast on November 9, 2012.

The Myth Of Multitasking

How long can you go without checking email, or glancing at your smartphone? Clifford Nass, a psychology professor at Stanford University, says today's nonstop multitasking actually wastes more time than it saves--and he says there's evidence it may be killing our concentration and creativity too.

Microexpressions: More Than Meets The Eye

David Matsumoto, a psychology professor at San Francisco State University, trains national security officials and police officers to recognize "microexpressions"--fleeting, split-second flashes of emotion across someone's face. Matsumoto says those subtle cues may reveal how an interview subject is feeling, helping officials to hone their line of questioning.