Effects of Presenting and Removing Reinforcers on Verbal Correspondence

Abstract The present study aimed to investigate the effect of presentation and withdrawal of reinforcers on verbal correspondence. Eight children individually played with toys, and then reported with what toys they had played. After baseline, reports of "no play", sometimes made individually, sometimes in groups, were punished (loss of tokens exchangeable for toys). Next, the participants were divided into two groups, whose participants underwent one of two procedures: (1) negative punishment of not corresponding reports; or (2) positive reinforcement of corresponding reports. The negative punishment of reports of "no play" produced an increase in the number of non-correspondent "play" reports for four children, and subsequently hindered the recovery of correspondence, either by negative punishment or by positive reinforcement.