Spaced Versus Massed Alcohol Avoidance Task

Participants are instructed to react with a joystick to the tilt of pictures, presented on a computer screen. For instance, participants make an approach movement (pull) with left-tilted pictures, and make an avoidance movement (push) with right-tilted pictures. After the correct movement is made, the pictures disappear, otherwise they do not, until the correct response is made.