全文获取类型
收费全文 | 7905篇 |
免费 | 346篇 |
国内免费 | 2篇 |
出版年
2020年 | 98篇 |
2019年 | 125篇 |
2018年 | 146篇 |
2017年 | 158篇 |
2016年 | 187篇 |
2015年 | 143篇 |
2014年 | 149篇 |
2013年 | 771篇 |
2012年 | 287篇 |
2011年 | 305篇 |
2010年 | 188篇 |
2009年 | 182篇 |
2008年 | 207篇 |
2007年 | 232篇 |
2006年 | 211篇 |
2005年 | 183篇 |
2004年 | 182篇 |
2003年 | 175篇 |
2002年 | 185篇 |
2001年 | 226篇 |
2000年 | 224篇 |
1999年 | 187篇 |
1998年 | 82篇 |
1997年 | 72篇 |
1996年 | 78篇 |
1995年 | 76篇 |
1993年 | 76篇 |
1992年 | 135篇 |
1991年 | 129篇 |
1990年 | 129篇 |
1989年 | 109篇 |
1988年 | 99篇 |
1987年 | 107篇 |
1986年 | 110篇 |
1985年 | 115篇 |
1984年 | 107篇 |
1983年 | 92篇 |
1982年 | 81篇 |
1980年 | 77篇 |
1979年 | 121篇 |
1978年 | 72篇 |
1975年 | 90篇 |
1974年 | 117篇 |
1973年 | 99篇 |
1972年 | 80篇 |
1971年 | 81篇 |
1970年 | 78篇 |
1969年 | 84篇 |
1968年 | 80篇 |
1967年 | 89篇 |
排序方式: 共有8253条查询结果,搜索用时 15 毫秒
951.
Craig J. Bryan William B. Elder Mary McNaughton-Cassill Augustine Osman Ann Marie Hernandez Sybil Allison 《Military psychology》2013,25(4):354-364
An active duty Air Force ground combat unit (n = 189) completed surveys about trauma and combat exposure, mood symptoms, and meaning in life. Two dimensions of deployment-related traumas were assessed: combat (e.g., firing weapons, being fired upon) and aftermath (e.g., seeing dead bodies, injury). Results of regression analyses indicated that Airmen who experienced more intense combat reported less presence of meaning in life, although the significant interaction with gender suggested declines in meaning in life were especially pronounced among males with higher combat intensity. In contrast, more intense aftermath exposure was associated with slightly stronger meaning in life, with no differences by gender. Intensity of combat exposure might differentially affect perceived meaning in life for male versus female combatants. 相似文献
952.
953.
Tom Loeys Beatrijs Moerkerke Olivia De Smet Ann Buysse Johan Steen Stijn Vansteelandt 《Multivariate behavioral research》2013,48(6):871-894
In the social sciences, mediation analysis has typically been formulated in the context of linear models using the Baron &; Kenny (1986) approach. Extensions to nonlinear models have been considered but lack formal justification. By placing mediation analysis within the counterfactual framework of causal inference one can define causal mediation effects in a way that is not tied to a specific statistical model and identify them under certain no unmeasured confounding assumptions. Corresponding estimation procedures using parametric or nonparametric models, based on the so-called mediation formula, have recently been proposed in the psychological literature and made accessible through the R-package mediation. A number of limitations of the latter approach are discussed and a more flexible approach using natural effects models is proposed as an alternative. The latter builds on the same counterfactual framework but enables interpretable and parsimonious modeling of direct and mediated effects and facilitates tests of hypotheses that would otherwise be difficult or impossible to test. We illustrate the approach in a study of individuals who ended a romantic relationship and explore whether the effect of attachment anxiety during the relationship on unwanted pursuit behavior after the breakup is mediated by negative affect during the breakup. 相似文献
954.
Bernt Ivar Olsen Bruno Laeng Kari‐Ann Kristiansen Gunnar Hartvigsen 《Scandinavian journal of psychology》2013,54(3):196-204
Performance in a computerized “mental rotation” task was measured in groups of males and females while they rotated Shepard‐Metzler‐like cube assemblies on either a standard laptop screen (size = 36 cm) or on a large display wall (584 cm) where the stimuli appeared at considerably larger sizes and within a much wider field of view than that typically used in most spatial tasks. Males and females did not differ significantly in performance in the standard size condition with regards to response time but females performed faster than males in the large display condition. Males were also found to be significantly more accurate than females, regardless of display. We found no sign of trading accuracy for speed for either of the sexes or screen size conditions. We surmise that such an effect may be due to differences in task‐solving strategies between the sexes, where a holistic strategy – which may be preferred by males is negatively affected by large object sizes, whereas a piecemeal approach, that may be preferred by females, is virtually unaffected by display size. 相似文献
955.
Despite the abundance of research on personality traits and citizenship behavior, no study has examined the role of relational self-construal, which is a self-definition based on one’s close relationships. We hypothesized that relational self-construal would be positively related to academic citizenship behaviors, and that this association would remain significant while controlling for sex and agreeableness. In the study, 2,222 college undergraduates completed a self-report questionnaire measuring their relational self-construal, sex, personality, and academic citizenship attitudes. The results also confirmed the hypothesis that relational self-construal is positively related to some academic citizenship behaviors while controlling for sex and agreeableness. Specifically, relational self-construal was associated with consideration and civic virtue, but not with other citizenship behaviors. 相似文献
956.
Ann Taves 《Religion》2013,43(4):658-666
Norenzayan's effort to integrate genetic and cultural evolution is a welcome advance over previous efforts, as is the attention he devotes to different levels of analysis from cognitive mechanisms to large group interactions. The scope of Norenzayan's argument, however, is bound to leave many scholars of religion feeling uneasy. The content of his model, which is most likely over specified, will need further testing in light of historical evidence. Comparison of Big Gods with Robert Bellah's Religion in Human Evolution (2011) highlights some of the choices Norenzayan made in designing his model and suggests ways it could be elaborated. Historians of religion who would like to help test his model could keep an eye out for ‘watcher mechanisms’ that might play more of a role than ‘moralizing Big Gods’ in some traditions and, thus, potentially offer an alternative route to large, anonymous, yet stable groups. 相似文献
957.
Joyce Hopkins John V. Lavigne Karen R. Gouze Susan A. LeBailly Fred B. Bryant 《Journal of abnormal child psychology》2013,41(5):705-722
Relatively few studies have examined multiple pathways by which risk factors from different domains are related to symptoms of anxiety and depression in young children; even fewer have assessed risks for these symptoms specifically, rather than for internalizing symptoms in general. We examined a theoretically- and empirically-based model of variables associated with these symptom types in a diverse community sample of 796 4-year-olds (391 boys, 405 girls) that included factors from the following domains: contextual (SES, stress and family conflict); parent characteristics (parental depression); parenting (support/engagement, hostility and scaffolding); and child characteristics including negative affect (NA) effortful control (EC) sensory regulation (SR), inhibitory control (IC) and attachment. We also compared the models to determine which variables contribute to a common correlates of symptoms of anxiety or depression, and which correlates differentiate between those symptom types. In the best-fitting model for these symptom types (a) SES, stress and conflict had indirect effects on both symptom types via long-chain paths; (b) caregiver depression had direct effects and indirect ones (mediated through parenting and child effortful control) on both symptom types; (c) parenting had direct and indirect effects (via temperament and SR); and temperament had direct effects on both symptom types. These data provide evidence of common risk factors, as well as indicate some specific pathways/mediators for the different symptom types. EC was related to anxiety, but not depression symptoms, suggesting that strategies to improve child EC may be particularly effective for treatment of anxiety symptoms in young children. 相似文献
958.
Micah O. Mazurek Roma A. Vasa Luther G. Kalb Stephen M. Kanne Daniel Rosenberg Amy Keefer Donna S. Murray Brian Freedman Lea Ann Lowery 《Journal of abnormal child psychology》2013,41(1):165-176
Children with autism spectrum disorders (ASD) experience high rates of anxiety, sensory processing problems, and gastrointestinal (GI) problems; however, the associations among these symptoms in children with ASD have not been previously examined. The current study examined bivariate and multivariate relations among anxiety, sensory over-responsivity, and chronic GI problems in a sample of 2,973 children with ASD enrolled in the Autism Treatment Network (ages 2–17 years, 81.6 % male). Twenty-four percent of the sample experienced at least one type of chronic GI problem (constipation, abdominal pain, bloating, diarrhea, and/or nausea lasting three or more months). Children with each type of GI problem had significantly higher rates of both anxiety and sensory over-responsivity. Sensory over-responsivity and anxiety were highly associated, and each provided unique contributions to the prediction of chronic GI problems in logistic regression analyses. The results indicate that anxiety, sensory over-responsivity and GI problems are possibly interrelated phenomenon for children with ASD, and may have common underlying mechanisms. 相似文献
959.
Carolyn A. McCarty Brian T. Wymbs W. Alex Mason Kevin M. King Elizabeth McCauley John Baer Ann Vander Stoep 《Journal of abnormal child psychology》2013,41(7):1041-1051
Most studies of adolescent substance use and psychological comorbidity have examined the contributions of conduct problems and depressive symptoms measured only at particular points-in-time. Yet, during adolescence, risk factors such as conduct problems and depression exist within a developmental context, and vary over time. Though internalizing and comorbid pathways to substance use have been theorized (Hussong et al. Psychology of Addictive Behaviors 25:390-404, 2011), the degree to which developmental increases in depressive symptoms and conduct problems elevate risk for substance use impairment among adolescents, in either an additive or potentially a synergistic fashion, is unclear. Using a school-based sample of 521 adolescents, we tested additive and synergistic influences of changes in depressive symptoms and conduct problems from 6th to 9th grade using parallel process growth curve modeling with latent interactions in the prediction of late adolescent (12th grade) substance use impairment, while examining gender as a moderator. We found that the interaction between growth in depression and conduct disorder symptoms uniquely predicted later substance use problems, in addition to main effects of each, across boys and girls. Results indicated that adolescents whose parents reported increases in both depression and conduct disorder symptoms from 6th to 9th grade reported the most substance use-related impairment in 12th grade. The current study demonstrates that patterns of depression and conduct problems (e.g., growth vs. decreasing) are likely more important than the static levels at any particular point-in-time in relation to substance use risk. 相似文献
960.
Václav Mikota M.D. 《Scandinavian Psychoanalytic Review》2013,36(1):33-56
This paper considers the lack of coherence of the psychoanalytic theories of the primary and secondary process. As a consequence, the interplay of primary and secondary process modes of thought cannot be conceptualised properly. Firstly, we summarize the results of an elsewhere-made metapsychological re-examination of both principles of mental functioning, and argue that Rapaport's distinction between a drive and a conceptual organization of memory, elaborated on by Siegfried Zepf is an extremely useful means of understanding primary and secondary process activity. As a central thesis, we state that primary process operates by affects, whilst secondary process utilizes concepts. The second part of the paper makes an attempt to show the dialectical relationship of affective and conceptual thought in the functioning of the living psyche. Temporarily dominating mental functioning, primary and secondary process thinking each utilize the other as a means, but never work purely within the psychic apparatus. It is shown that it is the specific interplay of primary and secondary process activity, which produces new adaptive substitutive formations. Some basic assumptions about the concepts of regression and progression are made to elucidate the shift from secondary to primary process dominance and vice versa. 相似文献