Test yourself and help us learn more about the mind and brain.

Are you a twin?

If so, we've got two experiments that are just for twins:

Featured Science News

Making Open Eyes Feel Closed · Cognitive Daily
Science blog, Cognitive Daily, shows readers how to trick the brain into thinking the eyes are closed when they are wide open.

Sleep and Mental Health · Scientific American
We all know sleep is important, but does losing sleep have a link with psychiatric disorders?