全文获取类型
收费全文 | 2897篇 |
免费 | 162篇 |
出版年
2023年 | 36篇 |
2022年 | 57篇 |
2021年 | 78篇 |
2020年 | 109篇 |
2019年 | 90篇 |
2018年 | 167篇 |
2017年 | 168篇 |
2016年 | 140篇 |
2015年 | 80篇 |
2014年 | 104篇 |
2013年 | 388篇 |
2012年 | 222篇 |
2011年 | 224篇 |
2010年 | 136篇 |
2009年 | 69篇 |
2008年 | 191篇 |
2007年 | 140篇 |
2006年 | 119篇 |
2005年 | 66篇 |
2004年 | 59篇 |
2003年 | 67篇 |
2002年 | 43篇 |
2001年 | 26篇 |
2000年 | 35篇 |
1999年 | 20篇 |
1998年 | 16篇 |
1997年 | 13篇 |
1996年 | 6篇 |
1995年 | 8篇 |
1994年 | 8篇 |
1993年 | 11篇 |
1992年 | 6篇 |
1991年 | 18篇 |
1990年 | 8篇 |
1989年 | 10篇 |
1988年 | 9篇 |
1987年 | 9篇 |
1986年 | 7篇 |
1985年 | 11篇 |
1984年 | 5篇 |
1983年 | 4篇 |
1981年 | 6篇 |
1980年 | 5篇 |
1979年 | 5篇 |
1972年 | 5篇 |
1971年 | 6篇 |
1968年 | 8篇 |
1967年 | 4篇 |
1966年 | 7篇 |
1965年 | 8篇 |
排序方式: 共有3059条查询结果,搜索用时 15 毫秒
211.
212.
Cristián Pinto-Cortez Noemí Pereda María Soledad Álvarez-Lister 《Journal of aggression, maltreatment & trauma》2018,27(9):983-1002
The aim of this article is to report the prevalence of youth victimization and poly-victimization in northern Chile. Using the Juvenile Victimization Questionnaire, a sample of 706 adolescents ages 12 to 17 were surveyed. The results indicated that 89% of the participants had experienced victimization at least once in their lives and 76.8% had experienced at least 1 experience of victimization in the past year. The most frequent forms were conventional crimes (70% and 54.7%), witnessing and indirect victimization (63.2% and 45.2%), and peer and sibling victimization (50.0% and 34.6%), for the lifetime and the past year, respectively. Sexual victimization was less common for both time periods, but still relevant (15.9% lifetime and 9.9% past year). Older females and younger adolescents presented a higher risk of victimization particularly in conventional crimes and victimization by caregivers. As for poly-victimization, 21% of the adolescents presented between 4 and 6 different forms of victimization (the low poly-victimization group) and 16% reported seven or more (the high poly-victimization group) in the last year. The results showed that child and adolescent victimization is a significant problem in Chile. Percentages of victimization in Chilean adolescents were higher than those found in Europe or North America. Results from the group of poly-victims reinforces the need to evaluate the multiple forms of victimization that affect adolescents in Chile and to prioritize it in the design of the treatment of the consequences of violence, taking into account differences in gender and age. 相似文献
213.
214.
Arnulfo González-Cantú Leonor Mireles-Zavala Anabel Rodríguez-Romo Elizabeth Olavide-Aguilar Natalia Eloisa De la Garza-Hernández 《Psychology, health & medicine》2018,23(3):325-336
Depression and anxiety are hightly prevalent among patients with Type 2 Diabetes (T2D), however not commonly related to outcomes, treatment and comorbidities. Eating behaviors could also have an implication. To evaluate the relation between mood and eating behaviors with demographic, physical, treatment, biochemical profiles and chronic comorbidities in T2D we conducted this exploratory cross sectional study in a population from Mexico. Hospital Anxiety and Depression Scale and the Three Factor Eating Questionnaire Revised 21 (TFEQ-R21) were correlated with age, gender, blood pressure, treatment and comorbidities (nephropathy, neuropathy, retinopathy and cardiopathy). Multi-linear regression models and 2k factorial analyses were conducted. Sixty-one patients (31 male) 55 years old (SD 13) with at least 5 years of T2D were included. Anxiety correlated with depression (r = 0.25, p < 0.05). Gender (women) (std B 0.026, p < 0.001), insulin therapy (std B 0.3, p = 0.11), systolic blood pressure (std B 0.263, p = 0.02) and cardiovascular disease (std B 0.232, p = 0.035) predicted depression. Insulin therapy had a positive effect in cognitive restraint. (std B 0.32, p = 0.001). Age (std B 0.37, p = 0.003) and systolic blood pressure (std B 0.237, p = 0.048) predicted positively emotional eating (not previously published). 2k factorial analyses proved additive interaction between complications and insulin therapy with depression. This study supports the relation between mood disorders and eating behaviors with demographic, physical, treatment, biochemical profiles and chronic comorbidities in T2D and the additive interaction between factors and mood disorders. 相似文献
215.
Paulo Ventura Joana C. Carmo Cristiane Souza Fábio Martins Isabel Leite Sandra Pinho 《Visual cognition》2018,26(1):13-24
Are face recognition difficulties in Autism Spectrum Disorders (ASD) related to impaired holistic processing? Gauthier et al. [Gauthier, I., Klaiman, C., &; Schultz, R. T. (2009). Face composite effects reveal abnormal face processing in Autism spectrum disorders. Vision Research, 49, 470–478. doi:10.1016/j.visres.2008.12.007] used the face composite task in adolescents with autism and found a congruency effect that was not modulated by alignment, a result which was interpreted as reflecting qualitatively different face processing mechanisms. In the present study we tested adults with ASD in a composite face task where presentation times were manipulated and further explored whether these participants were sensitive to holistic information in faces using a new version of the composite task: VHFPT 2.0 (The Vanderbilt Holistic Face Processing Test 2.0). Results suggest that adults with ASD process faces holistically and that their facial identity processing abilities are qualitatively similar and as efficient as that of typical adults. The difference between the results of Gauthier et al. (2009) with adolescents and the results with adults here reported are interpreted in terms of a developmental delay. 相似文献
216.
Academic self-handicapping is a very popular subject of research in educational psychology, in which a growing number of related findings are reported. However, apart from a recent meta-analysis (Schwinger et al. in J Educ Psychol 106(3):744–761, 2014), the last comprehensive review of the subject was published 17 years ago (Urdan and Midgley in Educ Psychol Rev 13(2):115–138, 2001). This paper integrates relevant findings accumulated since then, which are discussed in a coherent interpretive framework. The first part of the paper discusses the definition and theoretical grounds of academic self-handicapping, then its manifestations in an academic context are enumerated. The second part of the study focuses on the self-protective function of stereotypes based on self-handicapping as well as on the impressions self-handicapping students may make on others at school. A summary of the contributions of goal orientation theory is provided in relation to self-handicapping, and the effects of various goal orientations and goal structures on academic performance are analysed. Based on an analysis of interactions between self-handicapping and academic performance, the authors argue for the importance of prevention and suggest possible ways to prevent self-handicapping. In conclusion, measurement issues of academic self-handicapping and the methodological paradox inherent in questionnaire measures are discussed. 相似文献
217.
Javier Lozano Delmar Milagrosa Sánchez-Martín José Antonio Muñiz Velázquez 《Journal of Happiness Studies》2018,19(1):257-276
Many studies have linked audiovisual entertainment to hedonia. Recently, also to eudaimonic happiness. The Eudaimonic Spectator Questionnaire is proposed as a new tool to explore eudaimonic motivations that are linked to the consumption of audiovisual entertainment. The new questionnaire groups these eudaimonic motivations into two factors: the cultivation of cognitive–intellectual growth and social–emotional growth. Once the consistency and reliability of the questionnaire was tested, we observed statistically significant differences between fans and non-fan spectators; these differences were observed in both factors. The results indicated that being a fan is associated with the cultivation of human virtues and character strengths. 相似文献
218.
219.
Orsolya Kanizsár Paolo Mongillo Luca Battaglini Gianluca Campana Miina Lõoke Lieta Marinelli 《Animal cognition》2018,21(5):651-660
Knowledge about the mechanisms underlying canine vision is far from being exhaustive, especially that concerning post-retinal elaboration. One aspect that has received little attention is motion perception, and in spite of the common belief that dogs are extremely apt at detecting moving stimuli, there is no scientific support for such an assumption. In fact, we recently showed that dogs have higher thresholds than humans for coherent motion detection (Kanizsar et al. in Sci Rep UK 7:11259, 2017). This term refers to the ability of the visual system to perceive several units moving in the same direction, as one coherently moving global unit. Coherent motion perception is commonly investigated using random dot displays, containing variable proportions of coherently moving dots. Here, we investigated the relative contribution of local and global integration mechanisms for coherent motion perception, and changes in detection thresholds as a result of repeated exposure to the experimental stimuli. Dogs who had been involved in the previous study were given a conditioned discrimination task, in which we systematically manipulated dot density and duration and, eventually, re-assessed our subjects’ threshold after extensive exposure to the stimuli. Decreasing dot duration impacted on dogs’ accuracy in detecting coherent motion only at very low duration values, revealing the efficacy of local integration mechanisms. Density impacted on dogs’ accuracy in a linear fashion, indicating less efficient global integration. There was limited evidence of improvement in the re-assessment but, with an average threshold at re-assessment of 29%, dogs’ ability to detect coherent motion remains much poorer than that of humans. 相似文献
220.
Homeownership represents an important indicator of immigrant incorporation and assimilation. This study is a longitudinal analysis of the transition to first-time homeownership among a cohort of youths followed from 1979 to 2009 using the National Longitudinal Survey of Youth (NLSY, 1979). In particular, I examine Mexican generational group differences in the transition to first-time homeownership over an observation period that spans 30 years while evaluating theories of straight-line and segmented assimilation. I find that Mexican homeownership rates do not increase in a linear fashion across generations, relative to native, non-Hispanic whites, even after controlling for various social, demographic, and economic characteristics. Furthermore, analyses limited to Mexicans reveal that first- and second-generation respondents exhibit more success in the transition to first-time homeownership than their third-generation counterparts. Contrary to observing linear gains in homeownership across generations, I find that Mexicans are experiencing segmented paths towards homeownership and achieving upward mobility across generations. 相似文献