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   1698篇
  免费   36篇
  1734篇
  2023年   17篇
  2022年   19篇
  2021年   23篇
  2020年   41篇
  2019年   44篇
  2018年   54篇
  2017年   75篇
  2016年   67篇
  2015年   40篇
  2014年   53篇
  2013年   167篇
  2012年   97篇
  2011年   71篇
  2010年   50篇
  2009年   55篇
  2008年   60篇
  2007年   73篇
  2006年   46篇
  2005年   41篇
  2004年   49篇
  2003年   51篇
  2002年   53篇
  2001年   43篇
  2000年   29篇
  1999年   34篇
  1998年   27篇
  1997年   12篇
  1996年   13篇
  1995年   18篇
  1994年   21篇
  1993年   12篇
  1992年   14篇
  1991年   14篇
  1990年   12篇
  1989年   11篇
  1988年   10篇
  1987年   13篇
  1986年   15篇
  1985年   14篇
  1984年   14篇
  1983年   10篇
  1982年   12篇
  1980年   9篇
  1978年   9篇
  1977年   9篇
  1974年   9篇
  1972年   8篇
  1971年   9篇
  1968年   11篇
  1966年   13篇
排序方式: 共有1734条查询结果,搜索用时 15 毫秒
891.
892.
Cognitive styles and behavior problems of clinic boys   总被引:1,自引:0,他引:1  
Groups of hyperactive, learning-disabled, epileptic, and normal boys matched on age and intelligence were compared on measures of cognitive style and maternal reports of behavioral pathology. All clinical groups were more impulsive, more field dependent, and weaker automatizers than their nonclinic peers. Although the clinical groups were described by their mothers as showing more behavior problems than controls, hyperactive boys were seen as having more conduct problems, while learning-disabled boys were seen as immature.  相似文献   
893.
A structured psychiatric interview designed for both clinical assessment and data collection was given to 50 pairs of well-matched pediatrie and psychiatric clinic children and their mothers. The two groups were shown to be dearly distinguished on the basis of numbers of symptoms. Behavior and school symptoms gave the sharpest distinction between the two groups. Neurotic and somatic symptoms were the poorest discriminators. The psychiatric children showed significantly more antisocial symptoms than their matched pediatrie peers. Age differences showed the expected trends with the widest divergence in the number of symptoms being in the oldest age group.This study was supported in part by NIMH Grant 05938.  相似文献   
894.
895.
As part of a larger study, the authors replicated Ferreira and Winter's ( 2 ) study of family interaction and decision-making using families with a drug-abusing child. Ferreira and Winter compared normal families and families with a child diagnosed as schizophrenic, delinquent, or maladjusted.  相似文献   
896.
Born-deaf, orally trained youngsters were examined on two tasks of immediate memory for pictures of objects. The aim was to investigate the extent of speech coding for pictures in immediate memory in a developmental context. The deaf, unlike young hearing children, did not use picture-name rhyme spontaneously as a cue to recall in a paired association task. Nevertheless, they were just as sensitive as reading age-matched hearing controls to spoken word length in recalling pictures by name. This might mean that the deaf use articulatory rehearsal in some immediate memory tasks, but this leads to a paradoxical conclusion. What could "inner speech" in the deaf be for, if it fails to affect their "inner ear" by inducing rhyme sensitivity in the paired associate task? This paradox is discussed in relation to distinctions between covert and overt use of memory cues in the paired recall task and to possible sources of the word length effect in young hearing (8-9 years old) and deaf subjects.  相似文献   
897.
Recent experimental studies have shown that people code time in terms of a mental timeline which typically runs from left to right or from back to front. Determining the cognitive function of this mental timeline for language processing, however, is still an unsettled issue. Whereas the studies of Ulrich and Maienborn (2010) and Ulrich et al. (2012) argue against an automatic activation of the mental timeline for the interpretation of tense and temporal adverbials at sentence level, Sell and Kaschak (2011) observe an automatic activation for the processing of past- and future-related sentences in small stories. The present paper reports the results of three experiments which examine the processing of sentences with retrospective and prospective verbs (e.g., to remember, to regret vs. to expect, to announce) in present tense, which locate a second, embedded event in the past or the future. When temporal information was task-relevant, a space–time congruency effect emerged (Experiment 1). This suggests that the mental timeline is not only linked to overtly deictic linguistic material but may also be construed in a more intricate way through the compositional construction of sentence meaning. The congruency effect disappeared, however, when temporal information was task-irrelevant (Experiments 2 and 3), suggesting that the mental timeline is not functionally involved in the cognitive processing of these especially demanding two-event sentences. The results of the present study support the conclusion that the relevant factor driving an automatic activation of the mental timeline is not the number of linguistically expressed events, but might rather be the number of sentential units.  相似文献   
898.
Many studies have reported that the confidence people have in their judgments exceeds their accuracy and that overconfidence increases with the difficulty of the task. However, some common analyses confound systematic psychological effects with statistical effects that are inevitable if judgments are imperfect. We present three experiments using new methods to separate systematic effects from the statistically inevitable. We still find systematic differences between confidence and accuracy, including an overall bias toward overconfidence. However, these effects vary greatly with the type of judgment. There is little general overconfidence with two-choice questions and pronounced overconfidence with subjective confidence intervals. Over- and underconfidence also vary systematically with the domain of questions asked, but not as a function of difficulty. We also find stable individual differences. Determining why some people, some domains, and some types of judgments are more prone to overconfidence will be important to understanding how confidence judgments are made.  相似文献   
899.
The aim of this study was to investigate the relationship between force control and cognitive performance under dual-task conditions in younger (18-22 years) and older adults (65-77 years). Cognitive (n-back test) and motor performance (force-tracking) was measured independently and simultaneously. Results indicated overall age-related differences for the n-back and the force-tracking task. Age-related differences increased during dual-task conditions. While younger adults exhibited no decrease in cognitive or motor performance during dual-task conditions, older adults showed a decrease in motor and cognitive performance. Additionally, when older adults made an error in the cognitive task they tended to show greater variability in the force-tracking task. These results suggest that cognitive motor deficits are responsible for older adults' performance decrements under dual-task conditions.  相似文献   
900.
This article presents an account of how early language experience can impede the acquisition of non-native phonemes during adulthood. The hypothesis is that early language experience alters relatively low-level perceptual processing, and that these changes interfere with the formation and adaptability of higher-level linguistic representations. Supporting data are presented from an experiment that tested the perception of English /r/ and /l/ by Japanese, German, and American adults. The underlying perceptual spaces for these phonemes were mapped using multidimensional scaling and compared to native-language categorization judgments. The results demonstrate that Japanese adults are most sensitive to an acoustic cue, F2, that is irrelevant to the English /r/-/l/ categorization. German adults, in contrast, have relatively high sensitivity to more critical acoustic cues. The results show how language-specific perceptual processing can alter the relative salience of within- and between-category acoustic variation, and thereby interfere with second language acquisition.  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