全文获取类型
收费全文 | 27707篇 |
免费 | 515篇 |
国内免费 | 3篇 |
专业分类
28225篇 |
出版年
2018年 | 399篇 |
2017年 | 404篇 |
2016年 | 425篇 |
2015年 | 301篇 |
2014年 | 374篇 |
2013年 | 1996篇 |
2012年 | 668篇 |
2011年 | 729篇 |
2010年 | 496篇 |
2009年 | 451篇 |
2008年 | 705篇 |
2007年 | 628篇 |
2006年 | 610篇 |
2005年 | 539篇 |
2004年 | 527篇 |
2003年 | 530篇 |
2002年 | 530篇 |
2001年 | 699篇 |
2000年 | 687篇 |
1999年 | 538篇 |
1998年 | 303篇 |
1997年 | 302篇 |
1996年 | 303篇 |
1995年 | 285篇 |
1992年 | 515篇 |
1991年 | 503篇 |
1990年 | 481篇 |
1989年 | 452篇 |
1988年 | 468篇 |
1987年 | 433篇 |
1986年 | 476篇 |
1985年 | 455篇 |
1984年 | 398篇 |
1983年 | 357篇 |
1982年 | 278篇 |
1981年 | 304篇 |
1979年 | 431篇 |
1978年 | 350篇 |
1977年 | 306篇 |
1976年 | 317篇 |
1975年 | 366篇 |
1974年 | 453篇 |
1973年 | 488篇 |
1972年 | 367篇 |
1971年 | 391篇 |
1970年 | 357篇 |
1969年 | 384篇 |
1968年 | 456篇 |
1967年 | 422篇 |
1966年 | 433篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
151.
The belief that individual marital therapy (IMT) is an ineffective form of treatment for marriage problems and markedly inferior to the conjoint approaches has become almost an article of faith in family therapy circles. This position was originally advanced in the influential reviews of the research literature conducted by Gurman and Kniskern, and their conclusions have been cited in numerous other articles. This paper re-reviews the research studies purportedly supporting this conclusion and finds almost all of them to be invalidated by gross flaws in design and implementation. It is argued that from the highly inadequate evidence available, no conclusions can be reached concerning either the absolute or relative effectiveness of IMT. 相似文献
152.
Previous research has failed to demonstrate unambiguously the relative stability across time and consistency across tasks of individual differences in categorization, or categorization breadth The present study of categorizing behavior in college students assesses breadth at each of four points in time over a six-week period Results are consistent with an interpretation of breadth as a highly stable individual difference variable, but one that is constrained by the nature of the stimulus sets employed High stability coefficients were observed for each of two redundant tasks In contrast, cross-task consistency indices were generally low Personality correlates of breadth were similarly weak and inconsistent Several variables are suggested that may attenuate the generality of categorization breadth The existence of multiple styles of categorization is discussed 相似文献
153.
The accuracy of aimed movements to visual targets during development: the role of visual information
J V Brown M M Sepehr G Ettlinger W Skreczek 《Journal of experimental child psychology》1986,41(3):443-460
Children aged 1.5 to 8 years were required to touch accurately an illuminated target lamp located on a vertical board. Movements were made when visual information was complete (target lit for 3 s, room illuminated; partial (target lit for 3 s, room dark, and reduced (target lit for 0.7 s, room dark). Dependent variables were response accuracy, reaction time, and movement time. Accuracy decreased with decreasing availability of visual information and improved with age under all conditions. Reaction times were shorter in the dark (Conditions 2 and 3) than in the light; they decreased with age up to age 5 and did not continue to decrease thereafter. Movement time did not change with age under Conditions 1 and 3 but tended to increase with age under Condition 2. Slower movements were more accurate at all ages, provided visual feedback could be utilized. Increased reliance on the strategy "slower movements yield higher accuracy" was held to account for developmental changes under Condition 2, whereas in Conditions 1 and 3 improvement in the efficiency of motor preprogramming was implicated. 相似文献
154.
J P Rushton D W Fulker M C Neale D K Nias H J Eysenck 《Journal of personality and social psychology》1986,50(6):1192-1198
Five questionnaires measuring altruistic and aggressive tendencies were completed by 573 adult twin pairs of both sexes from the University of London Institute of Psychiatry Volunteer Twin Register. The questionnaires measured altruism, empathy, nurturance, aggressiveness, and assertiveness. The intraclass correlations for the five scales, respectively, were .53, .54, .49, .40, and .52 for 296 monozygotic pairs, and .25, .20, .14, .04, and .20 for 179 same-sex dizygotic pairs, resulting in broad heritability estimates of 56%, 68%, 70%, 72%, and 64%. Additional analyses, using maximum-likelihood model-fitting, revealed approximately 50% of the variance on each scale to be associated with genetic effects, virtually 0% with the twins' common environment, and the remaining 50% with each twins' specific environment and/or error associated with the test. Correcting for the unreliability in the tests raised the maximum-likelihood heritabilities to approximately 60%. Age and sex differences were also found: altruism increased over the age span from 19 to 60, whereas aggressiveness decreased, and, at each age, women had higher scores than men on altruism and lower scores on aggressiveness. 相似文献
155.
In previous studies subjects who have learned a positioning response with kinesthetic feedback tended to make greater errors when visual feedback was provided during later trials. These subjects have always performed with both kinesthetic and visual feedback available. This study determined whether subjects with only visual feedback would produce errors similar to those who received kinesthetic plus visual feedback. Blindfolded subjects learned to move a handle to a criterion location with knowledge of results following each trial. Subjects then were assigned to one of three experimental groups, with only kinesthetic feedback, with kinesthetic plus visual feedback, or with only visual feedback. Subjects had 9 trials without knowledge of results in these feedback conditions. When visual feedback was available, subjects tended to make longer response errors. This finding replicates previous studies. Also, the similarity of performances from the conditions with visual feedback indicated the dominance of visual information in the condition with kinesthetic plus visual feedback. 相似文献
156.
The purpose of this study was to examine the influence of age, sex, etiology, and degree of hearing loss on the static and dynamic balance performance of hearing impaired children and youth (N = 132), ages 3 to 14 yr. The subjects were individually assessed on Items 2 and 7 of Subtest 2 of the Short Form of the Bruininks-Oseretsky Test of Motor Proficiency. As expected, performance on both tasks improved with chronological age. In comparing the performance of subjects by etiology, only one significant difference emerged; those with genetic deafness were superior on static balance to those whose deafness was idiopathic. However, the mean scores for the genetic group were superior for both balance tasks. The sex of the child as well as extent of hearing loss did not affect performance in either task. 相似文献
157.
Relationship between specific disfluency variables and dichotic listening in stutterers 总被引:1,自引:0,他引:1
86 stutterers' disfluency patterns were examined in relation to their laterality preferences. Results suggest that young stutterers are a heterogeneous group and that specific disfluency variables were not related to ear preferences on a dichotic consonant-vowel listening task. 相似文献
158.
W Ende 《Psychiatrie, Neurologie, und medizinische Psychologie》1986,38(11):668-673
The author reports on an improvement in ECT in which Dexamethasone is used to prevent cerebral edema. This improved technique has been used for 823 EC treatment since 1979. Since then, no post-paroxysmal passage syndromes have been observed in gerontopsychiatric patients even in cases where ECT is applied relatively frequently. 相似文献
159.
The Psychological Record - 相似文献
160.
Smelling via the mouth: effect of aging 总被引:1,自引:0,他引:1