Are You a Brooder?

Trapped under the weight of introspection? Find out how to stop thinking yourself in circles. Plus—the physical and emotional toll of rumination and tips for cut-and-dry decision making.

Cognition

Quite simply, cognition refers to thinking. There are the obvious applications of conscious reasoning—doing taxes, playing chess, deconstructing Macbeth—but thought takes many subtler forms, such as interpreting sensory input, guiding physical actions, and empathizing with others. The old metaphor for human cognition was the computer—a logical information-processing machine.

Depression

Some 15 million Americans struggle with depression—an illness that comes in many forms—from major depression and seasonal affective disorder, to dysthymia and <a href="http://www.psychologytoday.com/conditions/bipolar-disorder"