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The Autoshaping Procedure As A Residual Block Clock, James Dougan, James Dinsmoor, John Pfister, Edda Thiels
The Autoshaping Procedure As A Residual Block Clock, James Dougan, James Dinsmoor, John Pfister, Edda Thiels
Scholarship
In the first experiment, 4 pigeons were each presented with a recurring sequence of four key colors followed by the delivery of grain (block clock). Once the rate of pecking had stabilized, three of the colors were replaced, during different series of sessions, by a darkening of the key. The rate of pecking was reduced within those segments of the interval between deliveries of food during which the key was dark; when the key was dark during the final portion of the interval, rates were reduced throughout the entire interval. In the second experiment, 3 new pigeons were exposed to …
Variation In Herrnsein’S R0 As A Function Of Alternative Reinforcement Rate, James Dougan, Frances Mcsweeney
Variation In Herrnsein’S R0 As A Function Of Alternative Reinforcement Rate, James Dougan, Frances Mcsweeney
Scholarship
In a test of Herrnstein's (1970, 1974) equation for simple schedules, 15 pigeons pecked a key that produced food delivered according to variable-interval schedules. One group of birds was water deprived, and food-reinforced key pecking occurred in the presence of free water. Two other groups were not water deprived; water was present for one and absent for the other. As predicted by Herrnstein, the parameter ro was significantly higher in the water-deprived group than in the two nondeprived groups. Contrary to Herrnstein's interpretation of ro, the rate of drinking varied across schedules. Herrnstein's interpretation can be salvaged by considering ro …