全文获取类型
收费全文 | 6191篇 |
免费 | 267篇 |
国内免费 | 2篇 |
专业分类
6460篇 |
出版年
2020年 | 74篇 |
2019年 | 89篇 |
2018年 | 118篇 |
2017年 | 121篇 |
2016年 | 124篇 |
2015年 | 104篇 |
2014年 | 113篇 |
2013年 | 552篇 |
2012年 | 211篇 |
2011年 | 227篇 |
2010年 | 141篇 |
2009年 | 132篇 |
2008年 | 157篇 |
2007年 | 156篇 |
2006年 | 146篇 |
2005年 | 116篇 |
2004年 | 117篇 |
2003年 | 115篇 |
2002年 | 122篇 |
2001年 | 204篇 |
2000年 | 195篇 |
1999年 | 155篇 |
1998年 | 59篇 |
1993年 | 53篇 |
1992年 | 113篇 |
1991年 | 112篇 |
1990年 | 107篇 |
1989年 | 94篇 |
1988年 | 89篇 |
1987年 | 93篇 |
1986年 | 98篇 |
1985年 | 104篇 |
1984年 | 91篇 |
1983年 | 71篇 |
1981年 | 56篇 |
1980年 | 56篇 |
1979年 | 108篇 |
1978年 | 56篇 |
1977年 | 50篇 |
1976年 | 61篇 |
1975年 | 77篇 |
1974年 | 103篇 |
1973年 | 91篇 |
1972年 | 75篇 |
1971年 | 78篇 |
1970年 | 77篇 |
1969年 | 81篇 |
1968年 | 75篇 |
1967年 | 88篇 |
1966年 | 51篇 |
排序方式: 共有6460条查询结果,搜索用时 15 毫秒
921.
922.
DRGs are not enough 总被引:2,自引:0,他引:2
923.
Information search following damage to the frontal lobes 总被引:2,自引:0,他引:2
Five adult patients with focal brain damage in different areas of the frontal lobes and five matched controls were administered a 20 Questions test. Other tests of planning, problem-solving, and decision-making were also administered to frontal lobe patients. The results indicate that damage to the frontal lobe impairs the ability to impose and utilize hierarchical organization in mental representation. 相似文献
924.
A polygraphic study on habituation of the somatic, autonomic, and EEG components of the orienting reaction elicited by a repetitive auditory stimulus during successive (weekly) sessions was performed in 29 patients with postmeningoencephalic epilepsy (PME) and in 116 control subjects. The study evidenced significant retention disturbances of orienting reaction habituation (i.e., of learning), the “saving” of stimulation, achieved from one session to another to obtain the habituation criterion, being lesser in PME patients than in control subjects. The severity of habituation retention disturbances depended on seizure frequency, electroclinical form, and history, as well as on features of EEG tracings. 相似文献
925.
The present paper examines the relationship between the development of moral behavior and the development of verbal regulatory processes. Relational frame theory and the distinctions among pliance, tracking, and augmenting forms of rule governance are applied to the domain of moral behavior and its development, in order to identify the specific social and verbal contingencies that are responsible for an evolving moral repertoire. It is argued that moral behavior is controlled by relational and rule-following repertoires, and that these can be arranged into a rough progression: pliance, tracking, augmenting, social concern for pliance, social concern for tracking, and social concern for augmenting. Congruence with data derived from other research traditions is examined, and applied implications are explored. 相似文献
926.
Linda J. Wunderley W. Brendan Reddy William N. Dember 《Journal of applied social psychology》1998,28(9):751-760
Male business leaders responded to 3 instruments, the Leadership Practices Inventory (LPI-SELF), the Kirton Adaption-Innovation Inventory (KAI), and a measure of optimism and pessimism (O/P). Approximately 5 to 6 (range = 3 to 9) of each of the 48 leaders' direct reports rated their leaders on the LPI (LPI-OBSERVER) and also responded to the O/P instrument. As predicted, both the leaders and their direct reports had lower mean scores on pessimism than a normative group; neither group differed from the norm on optimism. The leader KAI scores were negatively correlated with pessimism, and positively, though not significantly so, with optimism. Optimism was positively correlated with 2 factors of the LPI-OBSERVER, but pessimism was not correlated with any of the five LPI factors. 相似文献
927.
Surviving members of the Berkeley Older Generation Study were interviewed and tested with the Wechsler Adult Intelligence Scale in 1969-1970 and again in 1983-1984, when subjects' ages ranged from 73 to 93. Health was assessed by self-reports at both measurement periods. Although many individuals showed some decline in intellectual functioning, substantial individual differences were apparent at all age levels. More than one half of the subjects showed no reliable change, and a minority showed a reliable increase in verbal scores. The role of self-reported health has increasing importance in the maintenance of intellectual functioning in advanced old age. 相似文献
928.
929.
We assessed the relationship between brain structure and function in 10 individuals with specific language impairment (SLI), compared to six unaffected siblings, and 16 unrelated control participants with typical language. Voxel-based morphometry indicated that grey matter in the SLI group, relative to controls, was increased in the left inferior frontal cortex and decreased in the right caudate nucleus and superior temporal cortex bilaterally. The unaffected siblings also showed reduced grey matter in the caudate nucleus relative to controls. In an auditory covert naming task, the SLI group showed reduced activation in the left inferior frontal cortex, right putamen, and in the superior temporal cortex bilaterally. Despite spatially coincident structural and functional abnormalities in frontal and temporal areas, the relationships between structure and function in these regions were different. These findings suggest multiple structural and functional abnormalities in SLI that are differently associated with receptive and expressive language processing. 相似文献
930.
Karevold E Ystrom E Coplan RJ Sanson AV Mathiesen KS 《Journal of abnormal child psychology》2012,40(7):1167-1177
This longitudinal, population-based and prospective study investigated the stability, age-related changes, and socio-emotional outcomes of shyness from infancy to early adolescence. A sample of 921 children was followed from ages 1.5 to 12.5?years. Parent-reported shyness was assessed at five time points and maternal- and self-reported social skills and symptoms of anxiety and depression were assessed at age 12.5?years. Piecewise latent growth curve analysis was applied, with outcomes regressed on latent shyness intercept and slope factors. Results showed moderate stability and increasing levels of shyness across time, with more variance and a steeper increase in early as compared to mid-to-late childhood. Both stable shyness and increased shyness in mid-to-late (but not early) childhood predicted poorer social skills and higher levels of anxiety and depression symptoms in early adolescence. The implications of the evidence for two developmental periods in shyness trajectories with differential impact on later socio-emotional functioning are discussed. 相似文献