Knight M F, McKenzie H S
J Appl Behav Anal. 1974 Spring;7(1):33-8. doi: 10.1901/jaba.1974.7-33.
Reading stories at bedtime was made contingent upon nonthumbsucking for girls 3, 6, and 8 yr old. According to their mothers, all had been persistent thumbsuckers since infancy. Two had accompanying dental disorders. During baseline conditions, continuous noncontingent reading occurred. During experimental conditions, reading terminated on each occasion thumbsucking was observed and resumed immediately when thumbsucking ceased. High percentages of thumbsucking occurred during baseline conditions when reading was noncontingent, and low percentages occurred during experimental conditions when reading was contingent. Bedtime thumbsucking was eliminated for all three girls.
对于3岁、6岁和8岁的女孩,睡前讲故事的行为取决于她们不吮拇指。据她们的母亲说,她们从婴儿期起就一直持续吮拇指。其中两个还有伴发的牙齿疾病。在基线条件下,进行持续的非条件性阅读。在实验条件下,每当观察到吮拇指行为时,阅读就会停止,而当吮拇指行为停止时,阅读会立即恢复。在非条件性阅读的基线条件下,吮拇指的比例很高,而在阅读取决于不吮拇指的实验条件下,吮拇指的比例很低。所有三个女孩的睡前吮拇指行为都被消除了。