We all keep secrets – on average, people have about 13 secrets at any one time, five of which they have never told another person. Psychologist Michael Slepian, PhD, of Columbia Business School, talks about what types of secrets people keep, why keeping a secret bottled up inside can harm us, how keeping secrets -- or sharing them -- affects people’s relationships with each other, how we decide whom we can trust with our secrets, and whether other people can tell when we’re holding something back. Links Michael Slepian, PhD The Secret Life of Secrets Speaking of Psychology Homepage Sponsor Newport Healthcare