The Skinner box was a device designed by B. F. Skinner, which he used in reinforcement experiments on rats. The apparatus contained a food-releasing mechanism, which could deliver food as a reward for specific behaviours. The device also contained a grid, to which an electric current could be applied as an aversive stimulus. The Skinner box allowed the experimenter to control reinforcement contingencies, and to record behavioural responses.
Nevid, J. S. (2009) Psychology: Concepts and Applications. (pp. 187-188). Houghton Mifflin Company.