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排序方式: 共有161条查询结果,搜索用时 31 毫秒
1.
John M. Pearce David N. George Aydan Aydin 《The Quarterly Journal of Experimental Psychology Section B: Comparative and Physiological Psychology》2002,55(1):61-73
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 1 and 2A revealed stronger responding during AB than during CD. In Experiment 2B, there was no evidence of a summation of responding during AB when A+ B+ training was conducted in the absence of CD+ trials. A further failure to observe abnormally strong responding during ABwas found in Experiment 3 for which the training trials with A+ B+ CD+ were accompanied by trials in which C and D were separately paired with food. The results are explained in terms of a configural theory of conditioning, which assumes that responding during a compound is determined by generalization from its components, as well as from other compounds to which it is similar. 相似文献
2.
John M. Pearce Helen Kaye Louis Collins 《The Quarterly Journal of Experimental Psychology Section B: Comparative and Physiological Psychology》1985,37(4):379-396
Three experiments, each using a single group of pigeons, are reported. In Experiment 1 subjects were initially trained with two stimuli, one of which was always followed by food, the other being reinforced according to a 50% partial reinforcement schedule. Subsequently a serial procedure was adopted in which an additional stimulus, C, was consistently followed by the partially reinforced CS. A second additional stimulus, A, was followed on half of its occurrences by the continuously reinforced CS, its remaining presentations being followed by nothing. The rate of autoshaped keypecking was substantially greater during A than during C. In the remaining experiments subjects received first-order conditioning with a single stimulus that was either partially (Experiment 2) or continuously (Experiment 3) reinforced. The stimuli A and C were then again introduced for serial autoshaping. Stimulus A was occasionally paired with the CS and occasionally followed by nothing, whereas stimulus C was always followed by the CS. As in Experiment 1, the rate of responding during A was greater than during C. It is proposed that one influence on the rate of autoshaped keypecking during a CS is the accuracy with which the immediate consequences of that CS are predicted. 相似文献
3.
A model for stimulus generalization in Pavlovian conditioning 总被引:2,自引:0,他引:2
J M Pearce 《Psychological review》1987,94(1):61-73
4.
R Ramachandran J M Pearce 《Journal of experimental psychology. Animal behavior processes》1987,13(2):182-192
In four experiments we examined the effect of an irrelevant drive on classical conditioning with food and water. In the first experiment the irrelevant drive weakened the conditioned response in extinction. In Experiments 2 and 3, this suppressive effect was found also in acquisition. Furthermore, the presence of an irrelevant drive during nonreinforced presentations of the conditioned stimulus was found to protect the conditioned response from extinction. Experiment 4 showed that the depressive effect of the irrelevant drive is manifested only when the relevant drive is present. Taken together, these results suggest that an irrelevant drive can influence conditioned responding by modulating the representation of the unconditioned stimulus. 相似文献
5.
The horizontal-vertical illusion was studied as a function of retinal eccentricity. It was found that the relation of illusion magnitude to vertical eccentricity is described by a U-shaped function with large amounts of reversed illusion for the more eccentric positions. Substantial effects due to horizontal eccentricity were also obtained, but these were not consistent across subjects. It is suggested that the flattening of the peripheral zones of the refracting surfaces of the eye may be involved in the variation of the illusion with retinal position, and that the astigmatic properties of the central portions of these surfaces may be a prime factor in the usual horizontal-vertical illusion. 相似文献
6.
Rama Ganesan John M. Pearce 《The Quarterly Journal of Experimental Psychology Section B: Comparative and Physiological Psychology》1988,40(3):229-241
In two experiments rats were initially trained with one conditioned stimulus (CS) signalling food and another CS signalling water. The main purpose of the experiments was to examine the effects of presenting these stimuli in compound. Experiment 1 demonstrated that the level of conditioned responding to this compound was equal to that of a group for which the compound was composed of elements that had separately signalled the same reinforcer. Moreover, the level of this responding was greater than for a group that had received only compound conditioning. In the second experiment it was found that after the initial training, repeatedly pairing the compound with a single reinforcer resulted in an equivalent loss of conditioned responding to both elements. These findings suggest that the interaction between conditioned stimuli for food and water is facilitatory rather than inhibitory. 相似文献
7.
Conceptual structure and social functions of behavior explanations: beyond person--situation attributions 总被引:3,自引:0,他引:3
Malle BF Knobe J O'Laughlin MJ Pearce GE Nelson SE 《Journal of personality and social psychology》2000,79(3):309-326
The traditional approach to studying behavior explanations involves treating them as either person causes or situation causes and assessing them by using rating scales. An analysis of people's free-response behavior explanations reveals, however, that the conceptual distinctions people use in their explanations are more complex and sophisticated than the person-situation dichotomy suggests. The authors, therefore, introduce a model of the conceptual structure of folk behavior explanations (the network of concepts and assumptions on which explanations are based) and test it in 4 studies. The modes and features of behavior explanations within this conceptual structure also have specific social functions. In 2 additional studies, the authors demonstrate that people alter distinct features of their explanations when pursuing particular impression-management goals and that listeners make inferences about explainers' goals on the basis of these features. 相似文献
8.
Ames SL Gallaher PE Sun P Pearce S Zogg JB Houska BR Leigh BC Stacy AW 《Behavior research methods》2005,37(3):470-479
A Web-based coding application was designed to improve coding efficiency and to provide a systematic means of evaluating responses
to open-ended assessments. The system was developed for use by multiple raters to assign open-ended responses to predetermined
categories. The application provides a software environment for efficiently supervising the work of coders and evaluating
the quality of the coding by (1) systematically presenting open-ended responses to coders, (2) tracking each coder’s categorized
responses, and (3) assessing interrater consistency at any time in order to identify coders in need of further training. In
addition, the application can be set to automatically assign repeated responses to categories previously identified as appropriate
for those responses. To evaluate the efficacy of the coding application and to determine the statistical reliability of coding
open-ended data within this application, we examined data from two empirical studies. The results demonstrated substantial
interrater agreement on items assigned to various categories across free and controlled association tasks. Overall, this new
coding application provides a feasible method of reliably coding open-ended data and makes the task of coding these data more
manageable. 相似文献
9.
McGregor A Good MA Pearce JM 《Journal of experimental psychology. Animal behavior processes》2004,30(1):34-44
In 3 experiments, rats were required to escape from a Morris pool by swimming to a submerged platform that was located at the apex of a notional, equilateral triangle with 2 different landmarks occupying the corners at the base. Training for 1 group was always conducted in view of the landmarks surrounding the pool and with the triangular array in a fixed orientation. Subjects could therefore identify the direction of the platform from a single landmark within the pool by reference to cues outside the pool or to the other landmark within the pool. Both strategies were used, and the results from additional groups revealed that the first of these strategies did not affect the acquisition of the second one. 相似文献
10.
Pearce JM Good MA Jones PM McGregor A 《Journal of experimental psychology. Animal behavior processes》2004,30(2):135-147
In 3 experiments, rats were required to find a submerged platform located in 1 corner of an arena that had 2 long and 2 short sides; they were then trained to find the platform in a new arena that also had 2 long and 2 short sides but a different overall shape. The platform in the new arena was easier to find if it was in a corner that was geometrically equivalent, rather than the mirror image, of the corner where it had previously been located. The final experiment revealed that hippocampal lesions impaired rats' ability to find the platform in these arenas. The results suggest that rats did not use the overall shape of the arena to locate the platform but relied on more local cues and that the hippocampus plays a role in navigation based on these cues. 相似文献