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   28487篇
  免费   564篇
  国内免费   4篇
  29055篇
  2020年   303篇
  2019年   346篇
  2018年   491篇
  2017年   486篇
  2016年   534篇
  2015年   417篇
  2014年   516篇
  2013年   2508篇
  2012年   913篇
  2011年   893篇
  2010年   621篇
  2009年   586篇
  2008年   860篇
  2007年   839篇
  2006年   790篇
  2005年   771篇
  2004年   728篇
  2003年   671篇
  2002年   725篇
  2001年   891篇
  2000年   847篇
  1999年   644篇
  1998年   370篇
  1997年   367篇
  1996年   307篇
  1995年   306篇
  1994年   284篇
  1993年   298篇
  1992年   523篇
  1991年   478篇
  1990年   501篇
  1989年   422篇
  1988年   402篇
  1987年   405篇
  1986年   372篇
  1985年   397篇
  1984年   418篇
  1983年   391篇
  1982年   338篇
  1981年   297篇
  1980年   263篇
  1979年   348篇
  1978年   343篇
  1977年   300篇
  1976年   291篇
  1975年   332篇
  1974年   380篇
  1973年   338篇
  1972年   257篇
  1968年   278篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
91.
T Aarkrog 《Adolescence》1985,20(79):682-687
This study investigated the parents of 100 psychotic and borderline adolescents, and their relationships with their adolescent children. The incidence of psychiatric disorders among the parents, and the incidence of one-parent homes, as well as the divorce rate of biological parents, are given. A direct assessment of the number of pathological relationships between adolescents and parents, defined from a therapeutic point of view, was also made. Examples are given of parental pathology or marital discord concealed in the adolescents' pathology, or in the parent-adolescent relationship. It was concluded that the assessment of parents and their relationships with the adolescents is important for the treatment of the adolescent.  相似文献   
92.
93.
Research on the dimensions of personality represented in the English language has repeatedly led to the identification of five factors (Norman, 1963). An alternative classification of personality traits, based on analyses of standardized questionnaires, is provided by the NEO (Neuroticism, Extraversion, Openness) model (Costa & McCrae, 1980b). In this study we examined the correspondence between these two systems in order to evaluate their comprehensiveness as models of personality. A sample of 498 men and women, participants in a longitudinal study of aging, completed an instrument containing 80 adjective pairs, which included 40 pairs proposed by Goldberg to measure the five dimensions. Neuroticism and extraversion factors from these items showed substantial correlations with corresponding NEO Inventory scales; however, analyses that included psychometric measures of intelligence suggested that the fifth factor in the Norman structure should be reconceptualized as openness to experience. Convergent correlations above .50 with spouse ratings on the NEO Inventory that were made three years earlier confirmed these relations across time, instrument, and source of data. We discuss the relations among culture, conscientiousness, openness, and intelligence, and we conclude that mental ability is a separate factor, though related to openness to experience.  相似文献   
94.
95.
The present study was designed to investigate whether a specific subgroup of learning-disabled children (attention-deficit-disordered, ADD) differed from their normal counterparts on Piagetian tasks of conservation. The subjects were 34 third-and fourth-grade children. Seventeen children had been diagnosed as ADD; the remaining half were designated as normal. The two groups were equivalent in chronological age, mental age, and intelligence. The results indicated significant differences between the two groups on tasks tapping conservation of substance and number. These results may support the theory of a lag in the development of conservation in children with specific learning disabilities (ADD). Implications of the present research for therapeutic and remedial programs that serve ADD children are also discussed.  相似文献   
96.
97.
98.
99.
Flicker fusion frequencies of 48 healthy controls and of 35 alcoholics were measured to detect possible associations between flicker fusion and signs of nonspecific brain damage, the aim of the study. FFF was statistically significantly lower in patients addicted to alcohol than in healthy subjects. Lower flicker fusion frequencies were associated with the severeness of organic psychosis as rated psychopathologically. The hypothesis that addiction to alcohol is a sign of diffuse, nonspecific, organic brain damage was discussed.  相似文献   
100.
We present four cases of Prader-Willi syndrome. Two of them have an abnormality of a chromosome 15, the other both show different chromosomal abnormalities. Translocations or deletions were found recently in the bands 15q11/12 in about 60% of the cases of Prader-Willi syndrome. The consequences for diagnosis, symptomatology and genetic counselling of the syndrome are discussed.  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