PSYC 2230 Lecture Notes - Lecture 5: Nociception, Ronald Melzack, John Bowlby
14 Feb 2017
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3 groups were given 1, 16, 256 pellets of food in the goal box after rats ran down alleyways. Then all groups were switched to 16 pellets. Running speed shifts rapidly when the condition of the reinforcement changed. The larger reward group now getting smaller rewards slowed down in relation to the control group. The smaller reward group ran quicker than control. Conclusion: the behavior changed drastically when the amount of incentive changed. Hull (1943) assumed that change of incentive does not change motivation. Crespi"s experiment proved that incentive energize behavior and hence influence motivation. Hull and spence in the 50"s both use k to represent incentive motivation. Rg is the consummatory response- in case of food for rats: chewing and swallowing. The rat when placed in the start box anticipates the reward and therefore starts rg in the start box, so the floor texture etc. , for example can start the rg.
