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111.
112.
Balleine BW Dickinson A 《Journal of experimental psychology. Animal behavior processes》2006,32(1):33-43
Hungry and thirsty rats lever pressed for food pellets in 1 visual stimulus (V1) and for a saline solution in another stimulus (V2). In a 2nd phase, the rats were made either hungry or thirsty and pressed for a starch solution in 2 stimulus compounds, each containing 1 of the visual cues and an auditory cue, that is, V1A1 and V2A2. On test, rats responded less to A1 than to A2 when hungry but less to A2 than to A1 when thirsty. Two further experiments replicated this selective blocking effect when the rats were both hungry and thirsty during Phase 2 and demonstrated that the magnitude of blocking was comparable to that observed when the reinforcer identity was held constant across the 2 phases. 相似文献
113.
114.
Clayton NS Yu KS Dickinson A 《Journal of experimental psychology. Animal behavior processes》2001,27(1):17-29
Four experiments examined whether food-storing scrub jays remember when and where they cached different foods. The scrub jays cached and recovered perishable and nonperishable foods in visuospatially distinct and trial-unique cache sites. They rapidly learned to avoid searching for foods that had perished by the time of recovery, while continuing to search for the same foods after shorter retention intervals when the foods were still fresh. The temporal control of searching at recovery was also observed when the familiarity of cache sites did not provide any information about the time of caching and when the same food was cached in distinct sites at different times. The authors argue that the jays formed an integrated memory for the location and time of caching of particular foods. 相似文献
115.
Clayton NS Bussey TJ Emery NJ Dickinson A 《Trends in cognitive sciences》2003,7(10):436-7; author reply 437-8
116.
We report the results of a 4-year-long study of capuchin monkeys (Cebus apella ) on concurrent three-way classification and linear size seriation tasks using explicit ordering procedures, requiring subjects
to select icons displayed on touch screens rather than manipulate and sort actual objects into groups. The results indicate
that C. apella is competent to classify nine items concurrently, first into three disjoint classes where class exemplars are identical to
one another, then into three reciprocal classes which share common exemplar (size) features. In the final phase we compare
the relative efficiency of executive control under conditions where both hierarchical and/or linear organization can be utilized.
Whilst this shows a superiority of categorical based size seriation for a nine item test set suggesting an adaptive advantage
for hierarchical over linear organization, Cebus nevertheless achieved high levels of principled linear size seriation with sequence lengths not normally achieved by children
below the age of six years. 相似文献
117.
Clayton NS Yu KS Dickinson A 《Journal of experimental psychology. Animal behavior processes》2003,29(1):14-22
When Western Scrub-Jays (Aphelocoma californica) cached and recovered perishable crickets, N. S. Clayton, K. S. Yu, and A. Dickinson (2001) reported that the jays rapidly learned to search for fresh crickets after a 1-day retention interval (RI) between caching and recovery but to avoid searching for perished crickets after a 4-day RI. In the present experiments, the jays generalized their search preference for crickets to intermediate RIs and used novel information about the rate of decay of crickets presented during the RI to reverse these search preferences at recovery. The authors interpret this reversal as evidence that the birds can integrate information about the caching episode with new information presented during the RI. 相似文献
118.
Kay Colby Sharp 《Journal of applied developmental psychology》1981,2(2):129-143
In order to test Shure and Spivack's theoretical position that a child's ability to verbally generate solutions to interpersonal problems and think about their consequences is directly related to the child's behavioral adjustment, preschoolers were tested on verbal problem-solving skills and their classroom behavior was rated by their teachers. Further, their behavior was observed by independent observers. No significant relationship between problem-solving skills and behavior was found. Following assessment, 54 of these children completed an 11-week training program, designed by Shure and Spivack, to improve their ability to think through and verbally generate solutions to interpersonal problems and to examine the possibility of mediation of such training to behavioral improvement. Preschoolers' ability to verbally generate alternative solutions to problems significantly increased due to training, however, this increase did not have an ameliorative effect on behavioral adjustment. 相似文献
119.
A Dickinson 《Journal of comparative psychology (Washington, D.C. : 1983)》1975,88(2):851-861
Effect of septal lesions on suppression of an intermittently food-reinforced lever press by contingent and noncontingent footshock was measured. Rats with septal damage maintained higher response rates than did intact animals under both contingent and noncontingent shock. Furthermore, the difference in suppression produced by the contingent and noncontingent conditions was approximately the same for the experimental and control groups. In a second experiment, performance was measured during counter-conditioning in which the correlation between contingent shock and positive reinforcement was varied. Rats with septal lesions responded at higher rates than did controls. When only reinforced responses were punished, this lesion-induced elevation represented an increase above baseline performance without punishment. This finding suggests that the effect of septal damage on appetitive instrumental performance cannot be due solely to a deficit in response inhibition. 相似文献
120.
Models of psychopathologies can be construed as modifications to the normal purposive behavior of an organism. The particular elements of purposive behavior to be emphasized here are (1) deriving facts about the environment (inferences), (2) attending to the self's needs, desires, and interests (affects), and (3) choosing directions and goals to fulfill these interests (intentions). A series of processes in a model of paranoia which performs these tasks will be described. We also describe the modifications made by the paranoid processes to the normal processes. A computer simulation has been constructed to test the model. 相似文献