全文获取类型
收费全文 | 38768篇 |
免费 | 1579篇 |
国内免费 | 14篇 |
出版年
2020年 | 357篇 |
2019年 | 416篇 |
2018年 | 570篇 |
2017年 | 580篇 |
2016年 | 647篇 |
2015年 | 485篇 |
2014年 | 554篇 |
2013年 | 2598篇 |
2012年 | 1091篇 |
2011年 | 1058篇 |
2010年 | 664篇 |
2009年 | 634篇 |
2008年 | 950篇 |
2007年 | 938篇 |
2006年 | 812篇 |
2005年 | 785篇 |
2004年 | 732篇 |
2003年 | 668篇 |
2002年 | 688篇 |
2001年 | 1266篇 |
2000年 | 1220篇 |
1999年 | 886篇 |
1998年 | 394篇 |
1992年 | 861篇 |
1991年 | 803篇 |
1990年 | 819篇 |
1989年 | 714篇 |
1988年 | 713篇 |
1987年 | 682篇 |
1986年 | 714篇 |
1985年 | 787篇 |
1984年 | 589篇 |
1983年 | 545篇 |
1982年 | 366篇 |
1981年 | 357篇 |
1980年 | 342篇 |
1979年 | 686篇 |
1978年 | 424篇 |
1977年 | 415篇 |
1976年 | 411篇 |
1975年 | 584篇 |
1974年 | 668篇 |
1973年 | 714篇 |
1972年 | 617篇 |
1971年 | 578篇 |
1970年 | 573篇 |
1969年 | 561篇 |
1968年 | 752篇 |
1967年 | 666篇 |
1966年 | 596篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
911.
R. Wong 《Psychological research》1972,35(3):213-217
Summary BD IX rats were trained to avoid a black and white compartment which was associated with gentling. The rats were given 12 acquisition sessions in which they were stroked if they remained in the critical compartment at the end of the fifteen 20-sec intervals during the 5-min test period. The results indicated that the negative reinforcing effects of gentling were a function of the early handling history and sex of the rat.This research was aided by Grant APA-247 from the National Research Council of Canada. The author thanks David Wood for his active collaboration in conducting the experiment. 相似文献
912.
An ann-out-of-water response was conditioned as an operant inOctopus cyaneus Gray. The response was limited to a vertical tube, 2.54 em i.d, Photoresistive sensors, illuminated with modulated light arranged around the tube above the waterline, detect the presence of an opaque object in the tube. The signal from this response detector is amplified and used to initiate a commercial motor-driven universal feeder according to the reinforcement schedule maintained by the logic control circuit. A sample cumulative record for perfonnance on a CRF schedule is given. 相似文献
913.
A circuit to permit an electronic drinkometer to operate during footshock is described. The circuit employs a diode matrix that allows all grid bars to be connected at one point to form one electrode of the drinkometer; it is isolated at another point so as not to shortcircuit the impressed footshock. 相似文献
914.
William R. Uttal 《Behavior research methods》1972,4(2):55-60
This, then, is a very personal and informal view of some of the peculiar trends of computer application in experimental psychology. If there is any single point on which I would prefer to end, it would be a reiteration of my belief that, on the whole, the positive attributes and contributions to our science of on-line computers have far outweighed some of these nagging aggravations. Regardless of what has been done and in what way it has been done, it is certainly better to have done something than never to have done anything at all. Our science, like a computer program, is also contingent and self-adapting, and most minor strategic errors are quickly corrected. But no one can debug a computer program or a major technological movement without at least having pushed the startbutton. 相似文献
915.
D. J. Guest M. E. Sime T. R. G. Green 《Quarterly journal of experimental psychology (2006)》1972,24(2):139-148
Errors in a serial choice-reaction time experiment employing two-finger chord responses to alphabetic stimuli are shown to be distributed in a significantly non-random fashion. Two factors are postulated which are relevant to prediction of the error response. These are the presence or absence of a common finger, and the difference in finger separation, between the actual and the required response. It is suggested that the chord response is coded in terms of a pattern (the distance between the two response components). Responses which mirror the correct response about the centre of the hand are also shown to be significantly more frequent. 相似文献
916.
David A. T. Siddle A. R. Nicol R. H. Foggitt 《Integrative psychological & behavioral science》1972,7(4):226-231
Overextinction of the GSR component of the orienting response was examined in a sample of 68 socially disturbed adolescents. Continued stimulus repetition beyond the point of habituation resulted in GSR return after 50–60 stimulus presentations. However, division of Ss into sleep and non-sleep groups using behavioral and self-report criteria, failed to support Sokolov’s (1963) notion that overextinction is accompanied by drowsiness. A possible explanation of these results is discussed. 相似文献
917.
918.
Klaus R. Scherer Robert Rosenthal Judy Koivumaki 《European journal of social psychology》1972,2(2):163-175
Differential vocal emphasis in the tape-recorded instruction reading for a standard person perception task was manipulated by mechanically raising or lowering the volume of the key words describing the success or failure response alternatives on the rating scale. In a series of three experiments, Ss exposed to success emphasis in the instructions rated the stimulus persons as more successful than did Ss exposed to failure emphasis. This trend was reversed for Ss who listened twice to the instructions. None of the Ss reported awareness of the influence attempt. 相似文献
919.
Two hundred and fifty-two brightness functions for seven simultaneously presented black, gray, and white squares on black, gray, and white backgrounds approximated power curves with positive exponents when illuminance was varied in seven steps over 1.9 log fL. Mean exponents were significantly larger for whiter vs blacker squares and for squares on the white vs the gray background. Mean exponents also increased more for squares on white than on black or gray backgrounds. Finally, a white replacing a black background elicited increasingly larger décrémentai responses as the squares varied from black to white. Jameson and Hurvich’s opponent-process theory, tested by the experiment, was not predictive. 相似文献
920.
This experiment represented an initial at tempt at comparing same-different classifications and similarity judgments of Markov histoforms sampled from three different schema families. A measure of individual stimulus variability was more strongfy related to classification responses than to judged similarity. Dichotomous responses, derived from the similarity data by imposing threshold criteria, were found to be highly similor to real classification responses when the threshold values were estimated directly from the latter; little correspondence, however, was obtained using optimal classification criteria. The results support the notion that somewhat different features are used in making classification responses and similarity judgments, and indicate the need for developing more sensitive tasks involving controlled scanning of pattem information. 相似文献