University of Kansas.
J Appl Behav Anal. 1968 Spring;1(1):73-6. doi: 10.1901/jaba.1968.1-73.
The effect of adult social reinforcement on the cooperative play of a five-year old girl in a preschool setting was assessed under two conditions: (1) presented randomly throughout the school day, and (2) presented contingent on cooperative play. Only in the latter condition was a significant change in cooperative play observed.
(1)在整个学校日随机呈现,(2)根据合作游戏呈现。只有在后一种情况下,才观察到合作游戏有显著变化。