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We analysed precisely, with video tapes, the behaviour of 38 Wistar rats submitted to a continuous reinforcement in a Skinner box. Animals displayed 14 different behavioural patterns close to the bar. We found that the increasing frequency of the bar press, generally considered as a unitary response was, in fact, due to summation of the development of several different behaviour frequencies. A...
A forced-choice procedure in T-maze designed for the induction of habits was used to induce strong habits in rats. The response choices of rats in 20 free-choice trials were compared after the rats had been subjected to 1 or 200 forced-choice trials to one side of the T-maze. After 200 forced-choice trials the rats showed a significant (p<.001) propensity for the habitual arm of the maze in the...
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