全文获取类型
收费全文 | 67749篇 |
免费 | 1400篇 |
国内免费 | 7篇 |
专业分类
69156篇 |
出版年
2020年 | 651篇 |
2019年 | 812篇 |
2018年 | 1081篇 |
2017年 | 1147篇 |
2016年 | 1194篇 |
2015年 | 898篇 |
2014年 | 1018篇 |
2013年 | 4807篇 |
2012年 | 1867篇 |
2011年 | 1939篇 |
2010年 | 1263篇 |
2009年 | 1217篇 |
2008年 | 1757篇 |
2007年 | 1667篇 |
2006年 | 1497篇 |
2005年 | 1353篇 |
2004年 | 1266篇 |
2003年 | 1258篇 |
2002年 | 1214篇 |
2001年 | 2202篇 |
2000年 | 2136篇 |
1999年 | 1573篇 |
1998年 | 733篇 |
1997年 | 616篇 |
1992年 | 1434篇 |
1991年 | 1358篇 |
1990年 | 1352篇 |
1989年 | 1195篇 |
1988年 | 1182篇 |
1987年 | 1147篇 |
1986年 | 1142篇 |
1985年 | 1265篇 |
1984年 | 1015篇 |
1983年 | 870篇 |
1982年 | 636篇 |
1981年 | 626篇 |
1979年 | 1069篇 |
1978年 | 723篇 |
1977年 | 706篇 |
1976年 | 667篇 |
1975年 | 939篇 |
1974年 | 1010篇 |
1973年 | 1092篇 |
1972年 | 926篇 |
1971年 | 833篇 |
1970年 | 827篇 |
1969年 | 830篇 |
1968年 | 1065篇 |
1967年 | 929篇 |
1966年 | 906篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
51.
Past research in referential communication has indicated normally developing children show developmental progression in ability to communicate a specific referent to a listener. In one paradigm subjects were given lists of word-pairs in which one member of each pair was designated as the referent. It was shown that communicating about referents found in word-pairs associated in some way was more difficult than communicating about referents in dissimilar word-pairs. The present study extended this methodology to learning-disabled children. Learning-disabled, language-learning-disabled, and normally achieving children were asked to communicate about 30 pictured referents on three different tasks. On Tasks 1 and 2 each subject was asked to give a clue for the referent that would distinguish it from the other picture. Stimuli for Task 1 were 30 pairs of pictures that were related in some way and the stimuli for Task 2 were 30 pairs of unrelated pictures. Task 3 required the subjects to evaluate the adequacy of the examiner's clues for Task 1 stimuli. The disabled subjects were matched to the normally achieving subjects on the basis of receptive vocabulary age. Few differences were noted among the groups' performances on these referential communication tasks. Implications include the importance of vocabulary and concept development to referential communication. 相似文献
52.
Human motor learning is often measured by error scores. The convention of using mean absolute error, mean constant error, and variable error shows lack of desirable parsimony and interpretability. This paper provides the background of error measurement and states criticisms of conventional methodology. A parsimonious model of error analysis is provided, along with operationalized interpretations and implications for motor learning. Teaching, interpreting, and using error scores in research may be simplified and facilitated with the model. 相似文献
53.
In this pilot study, 20 middle-school-age children classified as emotionally handicapped were administered Forms L and M of the Peabody Picture Vocabulary Test--Revised in test-retest fashion. Pearson correlations for Form L were .90, for Form M, .69, and these dependent correlations were significantly different from each other. As triennial school psychological evaluations typically contain tests which have been administered previously, e.g., WISC-R, WRAT-R, we suggest that psychologists use caution when using Form M to test or retest the receptive vocabulary of emotionally handicapped or disturbed middle-school-age children. 相似文献
54.
S Martin K Housley H Mccoy P Greenhouse F Stigger M A Kenney S Shoffner V Fu M Korslund F G Ercanli-Huffman 《Perceptual and motor skills》1988,67(3):879-884
The Rosenberg Self-esteem Scale was administered to 550 14- and 16-yr.-old (+/- 6 mo.) girls. Self-esteem scores were categorized by weight and weight by height. Scores on the Quetelet Index for obesity were correlated with self-esteem scores. Mean self-esteem of the low- and middle-weight by height group was significantly higher than the mean of the high-weight by height group. In analyzing weight alone, the self-esteem of the middle-weight group was significantly higher than the self-esteem of the high-weight group. The correlation of the obesity index and self-esteem indicated that as weight increased self-esteem decreased. 相似文献
55.
S W?sser W Handrick F B Spencker W Braun 《Psychiatrie, Neurologie, und medizinische Psychologie》1988,40(2):95-101
Observations on three children with neurolisteriosis (one case of meningitis, two cases of meningoencephalitis, each Serovar 4 b), show that even after the neonatal period, listeriosis must not be ignored in the process of diagnosis and therapy. It is the bacteriological examination of the cerebrospinal fluid, together with the blood culture, and not clinical symptoms and serology that guarantee a timely diagnosis and therapy (ampicillin and gentamicin). 相似文献
56.
57.
58.
W S Poland 《The Psychoanalytic quarterly》1988,57(3):341-369
Insight reflects the unitary nature of psychic activity in contrast to the fragmentation created in abstracting categories for the purpose of study and discussion. The unique analytic clinical dyad offers a structure in which intrapsychic fragments can be actualized and integrated. As a result, the analyst's contribution is more crucially one of exploration than of revelation. Whatever the area of examination, past or present, the link to analytic immediacy offers the opportunity to make meanings meaningful, to convert known facts to psychic truths. The analyst's clinical task requires his private self-analysis as part of the collaborative exploration of how the patient's mind works. Higher level ego functioning, including acutely active remembering, is at times transiently loosened in order for the analyst to share in the clinical work of discovery. The words the analyst uses to communicate his understanding convey only approximate manifest meanings, though they structurally reveal deeper messages of importance to the patient. These verbal approximations help stimulate self-reflection in the analysand as a step in the process of gaining insight. 相似文献
59.
60.
This paper provides a review of recent Supreme Court decisions stemming from the implementation of voluntary AAPs that include preferential treatment as a remedy; the evidence and proof required to establish and defend against reverse discrimination claims is identified. Overall, the courts sanctioned the use of preferential treatment if it occured as part of a well-conceived AAP. However, differences were found in the manner in which the courts adjudicated Title VII and constitutional claims of preferential treatment. The discussion examines research on the potential effects of voluntary AAPs on important organizational and societal outcome variables. We conclude that the impact of AAPs is likely to be far-reaching, exerting an effect possibly well beyond the limits considered in court decisions. 相似文献