全文获取类型
收费全文 | 1444篇 |
免费 | 78篇 |
专业分类
1522篇 |
出版年
2021年 | 10篇 |
2020年 | 24篇 |
2019年 | 43篇 |
2018年 | 36篇 |
2017年 | 46篇 |
2016年 | 46篇 |
2015年 | 29篇 |
2014年 | 32篇 |
2013年 | 175篇 |
2012年 | 53篇 |
2011年 | 76篇 |
2010年 | 54篇 |
2009年 | 36篇 |
2008年 | 69篇 |
2007年 | 56篇 |
2006年 | 71篇 |
2005年 | 48篇 |
2004年 | 43篇 |
2003年 | 46篇 |
2002年 | 44篇 |
2001年 | 18篇 |
2000年 | 18篇 |
1999年 | 22篇 |
1998年 | 28篇 |
1997年 | 10篇 |
1996年 | 28篇 |
1995年 | 18篇 |
1994年 | 14篇 |
1993年 | 17篇 |
1992年 | 20篇 |
1991年 | 21篇 |
1990年 | 16篇 |
1989年 | 11篇 |
1988年 | 13篇 |
1987年 | 12篇 |
1986年 | 15篇 |
1985年 | 18篇 |
1984年 | 19篇 |
1983年 | 13篇 |
1982年 | 16篇 |
1981年 | 13篇 |
1980年 | 18篇 |
1979年 | 10篇 |
1978年 | 15篇 |
1977年 | 9篇 |
1975年 | 8篇 |
1974年 | 8篇 |
1973年 | 13篇 |
1972年 | 5篇 |
1970年 | 5篇 |
排序方式: 共有1522条查询结果,搜索用时 0 毫秒
951.
Rooted in the theory of attention put forth by Mirsky, Anthony, Duncan, Ahearn, and Kellam (1991), the Structured Attention Module (SAM) is a developmentally sensitive, computer-based performance task designed specifically to assess sustained selective attention among 3- to 6-year-old children. The current study addressed the feasibility and validity of the SAM among 64 economically disadvantaged preschool-age children (mean age = 58 months; 55% female); a population known to be at risk for attention problems and adverse math performance outcomes. Feasibility was demonstrated by high completion rates and strong associations between SAM performance and age. Principal Factor Analysis with rotation produced robust support for a three-factor model (Accuracy, Speed, and Endurance) of SAM performance, which largely corresponded with existing theorized models of selective and sustained attention. Construct validity was evidenced by positive correlations between SAM Composite scores and all three SAM factors and IQ, and between SAM Accuracy and sequential memory. Value-added predictive validity was not confirmed through main effects of SAM on math performance above and beyond age and IQ; however, significant interactions by child sex were observed: Accuracy and Endurance both interacted with child sex to predict math performance. In both cases, the SAM factors predicted math performance more strongly for girls than for boys. There were no overall sex differences in SAM performance. In sum, the current findings suggest that interindividual variation in sustained selective attention, and potentially other aspects of attention and executive function, among young, high-risk children can be captured validly with developmentally sensitive measures. 相似文献
952.
Expectancies of success are widely thought to influence people's emotional reactions to performance outcomes: The lower one's expectancies, the more delighted one should be following success and the less disappointed one should be following failure. Although this proposition has been accepted almost as a truism, a review of the literature reveals that it has not been tested adequately. In this paper, we report two tests of this hypothesis, finding little evidence that low expectancies are beneficial. The discussion considers the implications of these findings for theories of emotion and the costs and benefits of positive thinking. 相似文献
953.
Wilson BJ Petaja HS Stevens AD Mitchell MF Peterson KM 《The Journal of genetic psychology》2011,172(4):376-400
In this study the authors investigated associations among children's observed responses to failure in an analogue entry situation, their attention deployment patterns, and skills and processes associated with self-regulation. Participants were 54 kindergarten and first-grade students who were either aggressive-rejected or low aggressive-popular based on peer nominations. Inhibitory control predicted the tendency to respond to entry failure by stopping and watching the group's activity. Baseline vagal tone and other-directed attention predicted children's tendency to change entry strategies after failure. Parent-rated attention skills moderated the relation between children's attention deployment patterns during the entry task and their responses to entry failure. Children who engaged in more other-directed attention were less likely to turn to solitary play after entry failure but only if they had high or moderate levels of attentional control. Other-directed attention was related to repeating previous entry bids without modification after entry failure but only when children had high levels of attention problems. 相似文献
954.
Fragrance sellers often provide coffee beans to their customers as a "nasal palate cleanser," to reduce the effects of olfactory adaptation and habituation. To test this idea, college students smelled three fragrances multiple times, rating odors each time. After completing nine trials, participants sniffed coffee beans, lemon slices, or plain air. Participants then indicated which of four presented fragrances had not been previously smelled; Coffee beans did not yield better performance than lemon slices or air. 相似文献
955.
Margaret S. Clark Aaron Greenberg Edward P. Lemay David Roosth 《Journal of experimental social psychology》2011,47(2):359-364
People may value their possessions, in part, because ownership of goods promotes feelings of security. If so, increasing their sense of security should reduce the value they place on possessions. In two studies we tested this prediction. In Study 1, participants who were assigned randomly to write about an instance of receiving social support placed less monetary value on a blanket they owned relative to participants who were assigned randomly to write about a pleasant restaurant experience. In Study 2, participants who were unobtrusively primed with security-related words placed less monetary value on a pen they just received relative to participants who were primed with positive or neutral words. Results suggest that enhancing interpersonal security reduces valuing possessions. 相似文献
956.
Studies of implicit memory for novel associations have focused primarily on verbal materials and have highlighted the contribution
of conceptually unitized representations to such priming. Using pictorial stimuli in a perceptual identification task, we
examined whether new association priming can occur at a purely perceptual level. By manipulating the spatial contiguity of
stimuli, we also evaluated whether such priming requires the creation of perceptually unitized representations. Finally, we
examined the status of such priming in aging. In Experiment 1, we found that spatial contiguity of stimuli is not necessary for novel pictorial association priming to emerge, although
such contiguity does enhance the magnitude of associative priming. In Experiment 2, we found that new association priming is age invariant, regardless of spatial contiguity. In Experiment 3, we provide additional evidence that pictorial association priming is perceptually based. These findings expand the scope
and delineate the conditions of novel association priming and inform theories about the nature of implicit memory for new
associations. 相似文献
957.
Kent KM Pelham WE Molina BS Sibley MH Waschbusch DA Yu J Gnagy EM Biswas A Babinski DE Karch KM 《Journal of abnormal child psychology》2011,39(3):451-462
This study compared the high school academic experience of adolescents with and without childhood ADHD using data from the
Pittsburgh ADHD Longitudinal Study (PALS). Participants were 326 males with childhood ADHD and 213 demographically similar
males without ADHD who were recruited at the start of the follow-up study. Data were collected yearly from parents, teachers
and schools. The current study used assessment points at which the participants were currently in or had recently completed
grades 9, 10, 11, and 12. Results indicated that adolescents with ADHD experienced significant academic impairment in high
school relative to comparison adolescents, including lower overall and main academic subject grade point averages (GPA), lower
levels of class placement (e.g. remedial vs. honors), and higher rates of course failure. In addition, teacher reports indicated
that adolescents with ADHD completed and turned in a significantly lower percentage of assignments and were significantly
less likely to be working up to their potential. Adolescents with ADHD were also significantly more likely to be absent or
tardy during the academic year, and they were over eight times more likely than adolescents without ADHD to drop out of high
school. These findings demonstrate that children with ADHD continue to experience severe academic impairment into high school. 相似文献
958.
Naeser MA Martin PI Theoret H Kobayashi M Fregni F Nicholas M Tormos JM Steven MS Baker EH Pascual-Leone A 《Brain and language》2011,119(3):206-213
This study sought to discover if an optimum 1 cm2 area in the non-damaged right hemisphere (RH) was present, which could temporarily improve naming in chronic, nonfluent aphasia patients when suppressed with repetitive transcranial magnetic stimulation (rTMS). Ten minutes of slow, 1 Hz rTMS was applied to suppress different RH ROIs in eight aphasia cases. Picture naming and response time (RT) were examined before, and immediately after rTMS. In aphasia patients, suppression of right pars triangularis (PTr) led to significant increase in pictures named, and significant decrease in RT. Suppression of right pars opercularis (POp), however, led to significant increase in RT, but no change in number of pictures named. Eight normals named all pictures correctly; similar to aphasia patients, RT significantly decreased following rTMS to suppress right PTr, versus right POp. Differential effects following suppression of right PTr versus right POp suggest different functional roles for these regions. 相似文献
959.
There is extraordinary diversity in how the construct of self-control is operationalized in research studies. We meta-analytically examined evidence of convergent validity among executive function, delay of gratification, and self- and informant-report questionnaire measures of self-control. Overall, measures demonstrated moderate convergence (rrandom = .27 [95% CI = .24, .30]; rfixed = .34 [.33, .35], k = 282 samples, N = 33,564 participants), although there was substantial heterogeneity in the observed correlations. Correlations within and across types of self-control measures were strongest for informant-report questionnaires and weakest for executive function tasks. Questionnaires assessing sensation seeking impulses could be distinguished from questionnaires assessing processes of impulse regulation. We conclude that self-control is a coherent but multidimensional construct best assessed using multiple methods. 相似文献
960.
Although group therapy is recommended for school-aged children who stutter (CWS), it is not widely researched. This study aimed to explore this provision, using a postal survey which investigated the current practices of Speech & Language Therapists (SLTs) in the UK. Seventy percent of SLT services provided some group therapy, but the level of provision was variable. There was a lack of consensus on what the main aims of group therapy should be. Important barriers to group therapy provision were identified, including a perceived lack of clients' interest in group therapy, and insufficient numbers of clients able to travel to group venues. This study enhances the profession's understanding of the provision of group therapy for CWS by identifying patterns of service delivery and highlighting areas of need. EDUCATIONAL OBJECTIVES: Readers should be able to: (1) Provide a rationale for the provision of group therapy for school-aged CWS; (2) Summarize the factors affecting group therapy provision for school-aged CWS; (3) Summarize the aims of therapy identified by the respondents to this survey. 相似文献