全文获取类型
收费全文 | 5972篇 |
免费 | 358篇 |
国内免费 | 1篇 |
出版年
2023年 | 49篇 |
2022年 | 59篇 |
2021年 | 103篇 |
2020年 | 137篇 |
2019年 | 186篇 |
2018年 | 248篇 |
2017年 | 253篇 |
2016年 | 256篇 |
2015年 | 183篇 |
2014年 | 232篇 |
2013年 | 766篇 |
2012年 | 321篇 |
2011年 | 375篇 |
2010年 | 218篇 |
2009年 | 217篇 |
2008年 | 293篇 |
2007年 | 250篇 |
2006年 | 211篇 |
2005年 | 182篇 |
2004年 | 217篇 |
2003年 | 198篇 |
2002年 | 164篇 |
2001年 | 102篇 |
2000年 | 107篇 |
1999年 | 84篇 |
1998年 | 58篇 |
1997年 | 54篇 |
1996年 | 52篇 |
1995年 | 46篇 |
1994年 | 44篇 |
1993年 | 30篇 |
1992年 | 49篇 |
1991年 | 37篇 |
1990年 | 52篇 |
1989年 | 53篇 |
1988年 | 44篇 |
1987年 | 29篇 |
1986年 | 35篇 |
1985年 | 37篇 |
1984年 | 37篇 |
1983年 | 23篇 |
1982年 | 25篇 |
1981年 | 17篇 |
1980年 | 21篇 |
1979年 | 24篇 |
1978年 | 19篇 |
1977年 | 11篇 |
1975年 | 14篇 |
1973年 | 9篇 |
1972年 | 14篇 |
排序方式: 共有6331条查询结果,搜索用时 31 毫秒
991.
The goal of the current study was to examine how the presence of a best friend might serve as protection against the effect of negative experiences on global self-worth and the hypothalamic-pituitary-adrenocortical axis (HPA axis). A total of 103 English-speaking male (n = 55) and female (n = 48) participants from Grade 5 (M = 10.27 years) and Grade 6 (M = 11.30 years) completed booklets about their experiences that occurred 20 min previously and how they felt about themselves at the moment, and they provided saliva multiple times per day over the course of 4 consecutive days. Having a best friend present during an experience significantly buffered the effect of the negativity of the experience on cortisol and global self-worth. When a best friend was not present, there was a significant increase in cortisol and a significant decrease in global self-worth as the negativity of the experience increased. When a best friend was present, there was less change in cortisol and global self-worth due to the negativity of the experience. 相似文献
992.
van de Schoot R Hoijtink H Mulder J Van Aken MA de Castro BO Meeus W Romeijn JW 《Developmental psychology》2011,47(1):203-212
Researchers often have expectations about the research outcomes in regard to inequality constraints between, e.g., group means. Consider the example of researchers who investigated the effects of inducing a negative emotional state in aggressive boys. It was expected that highly aggressive boys would, on average, score higher on aggressive responses toward other peers than moderately aggressive boys, who would in turn score higher than nonaggressive boys. In most cases, null hypothesis testing is used to evaluate such hypotheses. We show, however, that hypotheses formulated using inequality constraints between the group means are generally not evaluated properly. The wrong hypotheses are tested, i.e.. the null hypothesis that group means are equal. In this article, we propose an innovative solution to these above-mentioned issues using Bayesian model selection, which we illustrate using a case study. 相似文献
993.
Annette van Randenborgh Joachim Hüffmeier Joelle LeMoult Jutta Joormann 《Motivation and emotion》2010,34(4):325-332
Self-regulation of behavior frequently requires that people disengage from goals that are too difficult to attain. The current
studies investigate whether self-focused rumination hinders the execution of this crucial self-regulatory competence. In study
one, participants attempted to solve anagrams, some of which were unsolvable, and their predisposition to engage in self-focused
rumination was assessed. The tendency to ruminate was associated with getting stuck in the attempt to solve unsolvable anagrams.
In study two, ruminative thoughts were manipulated by asking participants to focus on their self, personality, and goals in
life, a task frequently employed to induce rumination. Compared to participants undergoing a distraction induction, ruminating
participants were more likely to get stuck trying to solve unsolvable anagrams. These results suggest that self-focused rumination
hinders disengagement from unattainable goals. 相似文献
994.
Janne C. Visser Sanny Smeekens Nanda Rommelse Robbert J. Verkes Rutger J. van der Gaag Jan K. Buitelaar 《Infant mental health journal》2010,31(6):611-629
The information provided by parents is indispensable for the early identification of psychopathology; for this reason, developmentally appropriate, reliable, and valid questionnaires are needed to gather their information. This study was designed to examine the utility of the Infant Toddler Social Emotional Assessment (ITSEA), a parent‐report questionnaire covering a wide range of behavior and emotional problems and competencies, in preschoolers referred for child psychiatric evaluation. The fathers and mothers of 85 children (23.2% girls; age 15–57 months) with autism spectrum, externalizing, or internalizing disorders completed the ITSEA, the Child Behavior Checklist (CBCL/2–3 and 4–18 versions), and the child domain of the Parenting Stress Index (PSI). The ITSEA showed good interrater reliability between parents, and validity was supported by significant correlations with corresponding CBCl and PSI domains. Evidence supporting the validity of the ITSEA for psychopathology was mixed across scales, with good diagnostic accuracy at the level of the broader psychiatric syndromes being achieved by the combination of subscales within the Externalizing, Internalizing, and Competence domains. The value of the ITSEA lies in the ability to systematically evaluate a wide range of problem behaviors and competencies. The ITSEA may be useful to create profiles of children's functioning in preschoolers referred for psychiatric assessment. 相似文献
995.
In this study, cross-cultural differences in cognitive test scores are hypothesized to depend on a test's cultural complexity (Cultural Complexity Hypothesis: CCH), here conceptualized as its content familiarity, rather than on its cognitive complexity (Spearman's Hypothesis: SH). The content familiarity of tests assessing short-term memory, attention, working memory, and figural and verbal fluid reasoning, was manipulated by constructing test versions with an item content derived from either Afrikaans or Tswana culture in South Africa. Both test versions were administered to children of both cultures. The sample consisted of 161 urban Afrikaans, 181 urban, and 159 rural Tswana children (Mage = 9.37 years). Children generally performed best on the test version that was designed for their own group, particularly on the cognitively and culturally complex working memory and figural fluid reasoning tests. This relation between content familiarity and cognitive test performance supports CCH and disconfirms SH. 相似文献
996.
M.J. van Tricht D.H. Nieman L.J. Bour T. Boerée J.H.T.M. Koelman L. de Haan D.H. Linszen 《Brain and cognition》2010
Abnormalities in eye tracking are consistently observed in schizophrenia patients and their relatives and have been proposed as an endophenotype of the disease. The aim of this study was to investigate the performance of patients at Ultra High Risk (UHR) for developing psychosis on a task of smooth pursuit eye movement (SPEM). Forty-six UHR patients and twenty-eight age and education matched controls were assessed with a task of SPEM and psychiatric questionnaires. Our results showed that both the corrective and non-corrective saccadic rates during pursuit were higher in the UHR group. There were however no differences in smooth pursuit gain between the two groups. The saccadic rate was related to positive UHR symptoms. Our findings indicate that abnormalities in SPEM are already present in UHR patients, prior to a first psychotic episode. These abnormalities occur only in the saccadic system. 相似文献
997.
Homogeneously coloured bars may exhibit lightness differences at the intersections. A well-known example is the Hermann grid illusion, where crossing white bars on a black background show dark patches at the crossings. Jung (1973, Handbook of Sensory Physiology volume VII/3, pp 1-152) found that the dark patches persist when thin outlines are drawn at the intersections, and are even visible in foveal vision. Recently, it has been shown that making distortions to the contours of a Hermann grid-like configuration results in the disappearance of the illusory dark spots (Geier et al, 2008 Perception 37 651 665). We show that thin outlines at the crossings of the distorted Hermann grid induce lightness differences in the same direction as in the original Hermann grid illusion, even in foveal vision and in displays consisting of two crossing bars. Our experiments reveal that the induced lightness differences are independent of the luminance polarity and shape of the contours at the intersection. We suggest that the effect results from lateral inhibition and an additional spreading and capturing of these differences between luminance contours. A similar capturing between collinear contours may play a role in peripheral vision in the original Hermann grid. 相似文献
998.
Mirjam J. van Tricht Harriet M.M. SmedingJohannes D. Speelman Ben A. Schmand 《Brain and cognition》2010
Music has the potential to evoke strong emotions and plays a significant role in the lives of many people. Music might therefore be an ideal medium to assess emotion recognition. We investigated emotion recognition in music in 20 patients with idiopathic Parkinson’s disease (PD) and 20 matched healthy volunteers. The role of cognitive dysfunction and other disease characteristics in emotion recognition was also evaluated. 相似文献
999.
1000.
The death of a child is an event that can fall into the category of uncontrollable life events, testing the limits of the
ability to control of bereaved parents. The literature reviewed showed that religious/spiritual coping is a unique way of
coping and may be particularly important for couples who have lost a child. When assessing the couples’ coping strategies,
marital therapists would be wise to look for religious/spiritual mechanisms that can be employed in the therapeutic process.
Furthermore, the reviewers propose Emotionally Focused Couple Therapy (Johnson, 2004, The practice of emotionally focused couple therapy: Creating connection, Routledge, New York) as well suited for helping
couples grieving the death of their child. 相似文献