首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   44627篇
  免费   1929篇
  国内免费   31篇
  46587篇
  2020年   499篇
  2019年   586篇
  2018年   834篇
  2017年   781篇
  2016年   885篇
  2015年   610篇
  2014年   761篇
  2013年   3411篇
  2012年   1432篇
  2011年   1377篇
  2010年   863篇
  2009年   900篇
  2008年   1191篇
  2007年   1227篇
  2006年   1089篇
  2005年   981篇
  2004年   934篇
  2003年   836篇
  2002年   882篇
  2001年   1590篇
  2000年   1592篇
  1999年   1155篇
  1998年   469篇
  1997年   450篇
  1995年   432篇
  1992年   931篇
  1991年   878篇
  1990年   876篇
  1989年   799篇
  1988年   775篇
  1987年   722篇
  1986年   700篇
  1985年   749篇
  1984年   632篇
  1983年   578篇
  1982年   447篇
  1979年   664篇
  1978年   478篇
  1977年   433篇
  1976年   436篇
  1975年   529篇
  1974年   643篇
  1973年   670篇
  1972年   553篇
  1971年   504篇
  1970年   447篇
  1969年   493篇
  1968年   596篇
  1967年   532篇
  1966年   488篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
971.
972.
This study asked the question: What are the role expectancies of treatment personnel in the treatment community and are they consistent across patients' emotional condition? An 83-item inventory was developed and administered under three different sets of instructions, each characterizing a different patient condition. Treatment staff and administrators were asked to rate items on the basis of the level of expectancy they held for their team vocational rehabilitation counselor. The analyses suggest that treatment staff and counselors do not agree on role expectations and that patient condition is a significant mediating variable.  相似文献   
973.
SURVIVAL VALUE     
  相似文献   
974.
Book reviews     
Animal Discrimination Learning. Edited by R. M. Gilbert and N. S. Sutherland. London: Academic Press. 1969. Pp. xvi + 501. 1358.

Luce, R. D. and Tukey, J. W. (1964). Simultaneous conjoint measurement: a new type of fundamental measurement. J. math. Psychol. I, 1-27.

Discrimination Learning. By D. A. Riley. Boston: Allyn and Bacon Inc. 1968. Pp. 172. Paperback 21s.

Annual Review of Psychology. Vol. 20. Palo Alto: Annual Reviews Inc. 1969. Pp. ix + 544. $9.00.

Cutaneous Sensation. By David Sinclair. London: Oxford University Press. 1967. Pp. xii + 306. 63s.

Modelling of Thinking and the Mind.. By N. M. Amosov. Translated by L. Finegold. New York: Spartan Books. London: Macmillan. 11967. Pp. xiii + 192.

The Mind of Mnemonist. By A. R. Luria. London: Jonathan Cape. 1969. Pp. xi + 160. 25s.

Determinants of Infant Behaviour IV. Edited by B. M. Foss. London: Methuen. 1969. Pp. 303. £3 10s.

Brain and Behaviour. Volumes 1-4. Edited by Karl Pribram. Harmondsworth: Penguin Books Ltd. 1969. Pp. 496 +573 + 523 + 524. 12s. 6d. per volume.  相似文献   
975.
An attempt was made to discover whether, in conditions similar to those of Michotte, the number of causal responses given by subjects was influenced by stimulation during the period just before the main experiment. Time-intervals between the arrival of object A and the departure of object B were systematically varied within the range 60 to 390 msec. Those who had earlier been exposed to shorter time-intervals (60 to 210 msec.) gave fewer causal responses than those who had been exposed to longer ones (150 to 300 msec. and 240 to 390 msec.). A possible explanation is offered in terms of the modification of existing “schemata.”  相似文献   
976.
Three experiments are reported, which are attempts to replicate the finding of Ross and Gregory (1964) that difference thresholds for weights can be lowered by means of the size-weight illusion. Three different procedures were used, the first one (experiment I) being designed to show whether or not changes in a subject's judgement criterion could account for apparent changes in sensitivity. The second method (Experiment II) was a replication of Ross and Gregory's first procedure, in which the standard weight was judged before the comparison. In Experiments I and II a larger illusion was induced than in the original studies, but in Experiment III both the weights and container sizes were practically identical to those used by Ross and Gregory. The procedure was also the same as their most successful procedure (number 3) in which standard and comparison were judged simultaneously. The findings were uniformly negative: there was no evidence of criterion shift when the size-weight illusion was induced nor did we find the lowering of threshold previously reported.  相似文献   
977.
978.
This study was designed to determine whether the counselor-offered conditions of empathy, respect, and genuineness promoted self-exploration in clients reporting voluntarily to a university counseling center. Twenty-seven male and 27 female undergraduates comprised the sample of clients; nine male doctoral student interns comprised the counselors. Clients were assigned to an educational, vocational, or personal-social problem category. The instruments used were the Truax Depth of Self-Exploration Scale and the Carkhuff scales of counselor conditions. Significant relationships were found between empathy, respect, and genuineness, and self-exploration in each problem category for counseling center clients of both sexes.  相似文献   
979.
The timer described in this note is an example of how a small increase in engineering complexity can lead to a marked increase in user convenience and overall system accuracy.  相似文献   
980.
Frequency DLs (Δf) at 1000 Hz were obtained in quiet and under masking conditions similar to those used in pitch-shift experiments, narrow-band noise at levels of 60, 80, and 100 dB SPL and tones at 15 dB SL or less. The Δfs were obtained by means of a tracking task in which the S controlled the input voltage to a frequency modulator. Characteristic improvement was seen when Δf was plotted as a function of sensation level. However, noise level itself was a significant factor, with more intense noise resulting in larger Δfs for tones of equal sensation level re masked threshold. This departure from previous findings is attributed to the signal and noise levels used, although the possibility exists that it is due to the use of modulated tones.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号