Probabilistic reward has been shown to affect children's choice behavior in game-like activities. We examined the effects of a lottery system containing progressively lower exchange ratios on children's completion of math problems. Two of the 3 children completed problems above baseline levels until the chance of exchange dropped to 25%. This study describes a potentially useful method for examining reinforcement schedules in applied settings and extends previous research on probabilities of reinforcement.
Copyright © John Wiley & Sons. Article published by John Wiley & Sons in Journal of Applied Behavior Analysis, volume 35, issue number 4, Winter 2002, pages 403-406. Available online on February 27, 2013: http://dx.doi.org/10.1901/jaba.2002.35-403