All Outputs (44)

Acquisition of superexcitatory properties by an irrelevant background stimulus (2002)
Journal Article
Williams, D. A., Mehta, R., Poworoznyk, T. M., Orihel, J. S., George, D. N., & Pearce, J. M. (2002). Acquisition of superexcitatory properties by an irrelevant background stimulus. Journal of Experimental Psychology: Animal Behavior Processes, 28(3), 284-297. https://doi.org/10.1037//0097-7403.28.3.284

Six appetitive conditioning experiments with rats demonstrated that an irrelevant X accompanying a negative patterning discrimination (XA+, XB+, XAB-) acquires extraordinarily high levels of conditioned excitation. Responding to X was similar to that... Read More about Acquisition of superexcitatory properties by an irrelevant background stimulus.

Summation in autoshaping is affected by the similarity of the visual stimuli to the stimulation they replace. (2002)
Journal Article
Pearce, J. M., Redhead, E. S., & George, D. N. (2002). Summation in autoshaping is affected by the similarity of the visual stimuli to the stimulation they replace. Journal of Experimental Psychology: Animal Behavior Processes, 28(2), 175-189. https://doi.org/10.1037/0097-7403.28.2.175

Pigeons received autoshaping with 2 stimuli, A and B, presented in adjacent regions on a television screen. Conditioning with each stimulus was therefore accompanied by stimulation that was displaced from the screen whenever the other stimulus was pr... Read More about Summation in autoshaping is affected by the similarity of the visual stimuli to the stimulation they replace..

Summation: further assessment of a configural theory (2002)
Journal Article
Pearce, J. M., George, D. N., & Aydin, A. (2002). Summation: further assessment of a configural theory. Quarterly Journal of Experimental Psychology Section B. Comparative and Physiological Psychology, 55(1b), 61-73. https://doi.org/10.1080/02724990143000171

Rats received Pavlovian conditioning in which food was signalled by a visual stimulus, A+, an auditory stimulus, B+, and a compound composed of different visual and auditory stimuli, CD+. Test trials were then given with the compound AB. Experiments... Read More about Summation: further assessment of a configural theory.

Discrimination of structure: I. Implications for connectionist theories of discrimination learning. (2001)
Journal Article
George, D. N., Ward-Robinson, J., & Pearce, J. M. (2001). Discrimination of structure: I. Implications for connectionist theories of discrimination learning. Journal of Experimental Psychology: Animal Behavior Processes, 27(3), 206-218. https://doi.org/10.1037/0097-7403.27.3.206

In each of 4 experiments animals were given a structural discrimination task that involved visual patterns composed of identical features, but the spatial relations among the features were different for reinforced and nonreinforced trials. In Experim... Read More about Discrimination of structure: I. Implications for connectionist theories of discrimination learning..