Self-determination theory offered a new model of what a human being is. Behaviorists said motivation comes from outside, while SDT argued that the deepest motivation is intrinsic.

A recent review of animal research suggests that caffeine might help ease symptoms of anxiety and depression by reducing inflammation in the brain. The researchers analyzed multiple experiments and ...

We sometimes look at motivation backwards: We assume there must be an outcome or reward in order to get ourselves or others motivated to act. This is not what science shows us. One of the key ...