Penrod Becky, Wallace Michele D, Dyer Edwin J
University of Nevada, Reno, Nevada, USA.
J Appl Behav Anal. 2008 Summer;41(2):177-88. doi: 10.1901/jaba.2008.41-177.
Previous research has suggested that the availability of high-preference stimuli may override the reinforcing efficacy of concurrently available low-preference stimuli under relatively low schedule requirements (e.g., fixed-ratio 1 schedule). It is unknown if similar effects would be obtained under higher schedule requirements. Thus, the current study compared high-preference and low-preference reinforcers under progressively increasing schedule requirements. Results for 3 of the 4 participants indicated that high-preference stimuli maintained responding under higher schedule requirements relative to low-preference stimuli. For 1 participant, high-preference and low-preference stimuli were demonstrated to be equally effective reinforcers under increasing schedule requirements. Implications with respect to rate of performance and response patterns are discussed.
先前的研究表明，在相对较低的强化程序要求下（例如，固定比率1程序），高偏好刺激的可得性可能会超过同时可得的低偏好刺激的强化效力。尚不清楚在更高的强化程序要求下是否会获得类似的效果。因此，本研究在逐渐增加的强化程序要求下比较了高偏好和低偏好强化物。4名参与者中有3名的结果表明，相对于低偏好刺激，高偏好刺激在更高的强化程序要求下能维持反应。对于1名参与者，在强化程序要求增加的情况下，高偏好和低偏好刺激被证明是同样有效的强化物。文中讨论了关于表现速率和反应模式的影响。
