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   3194篇
  免费   162篇
  国内免费   1篇
  3357篇
  2023年   20篇
  2022年   21篇
  2021年   42篇
  2020年   55篇
  2019年   67篇
  2018年   103篇
  2017年   107篇
  2016年   139篇
  2015年   84篇
  2014年   113篇
  2013年   371篇
  2012年   162篇
  2011年   170篇
  2010年   101篇
  2009年   89篇
  2008年   153篇
  2007年   123篇
  2006年   118篇
  2005年   102篇
  2004年   105篇
  2003年   107篇
  2002年   79篇
  2001年   69篇
  2000年   59篇
  1999年   41篇
  1998年   43篇
  1997年   39篇
  1996年   38篇
  1995年   44篇
  1994年   29篇
  1993年   34篇
  1992年   36篇
  1991年   31篇
  1990年   39篇
  1989年   26篇
  1988年   32篇
  1987年   19篇
  1986年   16篇
  1985年   25篇
  1984年   24篇
  1983年   20篇
  1982年   27篇
  1981年   14篇
  1979年   27篇
  1978年   18篇
  1977年   22篇
  1974年   18篇
  1972年   14篇
  1970年   13篇
  1968年   13篇
排序方式: 共有3357条查询结果,搜索用时 0 毫秒
991.
Loneliness is an adverse phenomenon that tends to peak during adolescence. As loneliness is a subjective state, it is different from the objective state of being alone. People’s attitudes toward being alone can be more or less negative or positive. Cultures differ in the form and meaning of social behavior, interpersonal relationships, and time spent alone. However, for cross-cultural comparisons to be meaningful, measurement invariance of the measure should be established. The present study examined measurement invariance of the Loneliness and Aloneness Scale for Children and Adolescents (LACA) in a sample of 218 Belgian and 190 Chinese early adolescents, aged 11–15 years. Using nested multigroup confirmatory factor analyses, measurement invariance of the LACA across Belgium and China was established. More specifically, evidence was found for configural, metric, and partial scalar invariance. Because partial scalar invariance was established, the two cultural groups could be compared. No significant differences were found for peer-related loneliness. Regarding the attitudes toward aloneness, Belgian adolescents were more negative and less positive toward being alone than Chinese adolescents. The present study is encouraging for researchers who want to use the LACA for cross-cultural comparisons, in that we found evidence for measurement invariance across two disparate cultural groups speaking completely different languages.  相似文献   
992.
This paper focuses on compost use in overpasses and underpasses for wild animals over roads and other similar linear structures. In this context, good quality of compost may result in faster and more resistant vegetation cover during the year. Inter alia, this can be interpreted also as reduction of damage and saving lives. There are millions of tones of plant residue produced every day worldwide. These represent prospective business for manufacturers of compost additives called “accelerators”. The opinions of the sale representatives’ with regards to other alternatives of biowaste utilization and their own products were reviewed. The robust analyzes of several “accelerated” composts revealed that the quality was generally low. Only two accelerated composts were somewhat similar in quality to the blank sample that was produced according to the traditional procedure. Overlaps between the interests of decision makers on future soil fertility were weighed against the preferences on short-term profit. Possible causes that allowed the boom of these underperforming products and the possible consequences are also discussed. Conclusions regarding the ethical concerns on how to run businesses with products whose profitability depends on weaknesses in the legal system and customer unawareness are to follow.  相似文献   
993.
The aims of this study were, first, to test the association between regulatory focus of adults with type 2 diabetes and their adherence to two types of self-care behaviors – lifestyle change (e.g. physical activity and diet) and medical care regimens (blood-glucose monitoring, foot care and medication usage). Second, to explore whether a fit between the message framing and patients’ regulatory focus would improve their intentions to adhere specifically when the type of behavior fits the patients’ regulatory focus as well. A cross-sectional study was conducted among 130 adults with type 2 diabetes who were hospitalized in an academic medical center. The patients completed a set of questionnaires that included their diabetes self-care activities, regulatory focus, self-esteem and demographic, socioeconomic and clinical data. In addition, participants were exposed to either a gain-framed or a loss-framed message, and were then asked to indicate their intention to improve adherence to self-care behaviors. A multivariable linear regression model revealed that promoters reported higher adherence to lifestyle change behaviors than preventers did (B = .60, p = .028). However, no effect of regulatory focus on adherence to medical care regimens was found (B = .46, p = .114). In addition, preventers reported higher intentions to adhere to medical care behaviors when the message framing was congruent with prevention focus (B = 1.16, p = .023). However, promoters did not report higher intentions to adhere to lifestyle behaviors when the message framing was congruent with promotion focus (B = ?.16, p = .765). These findings justify the need to develop tailor-made interventions that are adjusted to both patients’ regulatory focus and type of health behavior.  相似文献   
994.
Thanks to the exchange of arguments, groups outperform individuals on some tasks, such as solving logical problems. However, these results stem from experiments conducted among Westerners and they could be due to cultural particularities such as tolerance of contradiction and approval of public debate. Other cultures, collectivistic cultures in particular, are said to frown on argumentation. Moreover, some influential intellectual movements, such as Confucianism, disapprove of argumentation. In two experiments, the hypothesis that Easterners might not share the benefits of argumentation was tested. In Experiment 1, Japanese participants had to solve a standard logical problem individually and then in groups. They performed significantly better in groups. In Experiment 2, Japanese participants had to estimate the weight of various animals. They did so individually, then after learning of another participant's estimates, then after discussing these estimates with the other participant, and then individually again. While the Japanese participants also benefitted from the discussion, these benefits were only visible when participants provided a final individual estimate. This delay is interpreted as reflecting the pressure to preserve social harmony that would have constrained Japanese participants to yield to their partner even when knowing that this did not improve the accuracy of their answer.  相似文献   
995.
This study investigated the measurement invariance of the Emotional Quotient Inventory 2.0 across gender and ethnic groups in South Africa. The sample consisted of 1 144 working adults (female = 49.8%. black = 36.2%, white = 29.8%; other = 34%; age range = 18 to 74 years). Multiple group factor analysis was conducted to test for configural, metric, and scalar invariance. Results suggest that the assessment is largely invariant at configural and metric levels across gender and ethnic groups. At scalar level, full invariance was achieved for ten of the fifteen scales across gender and one scale across ethnicity. Partial scalar models were explored for all other scales. Overall, the evidence seems to suggest that the scores from the Emotional Quotient Inventory 2.0 scales had similar meanings for different gender and ethnic groups. However, for a few scales across gender, and more so for ethnicity, it seems that participant responses might also be influenced by factors other than the underlying latent constructs. Thus, while the scales of the assessment appears to be largely invariant at the configural and metric levels, a more nuanced picture emerged at scalar level with partially invariant models, especially across ethnic groups.  相似文献   
996.
Depression is one of the most common psychiatric disorders in both adolescents and adults. In this article, we introduce Short-term Psychodynamic Supportive Psychotherapy (SPSP) for adolescents, a relatively new form of psychodynamic therapy for depression that has been studied in a range of randomized controlled trials with adult patients. SPSP emphasizes the relational aetiology and significance of depression and is characterized by a supportive attitude which focuses more on working in the here-and-now relational patterns rather than interpreting transference manifestations. The supportive attitude of the therapist is advocated to engage the adolescent in the therapeutic relationship and to foster his or her innate developmental capacities by attending to previously unaddressed developmental needs. The developmental perspective’s interest in defense styles and stagnation resulting from problems in past and current relationships opens up opportunities for acquiring insight and change. The focus on relational functioning makes it a promising approach for adolescents because they can implement any positive change immediately in their actual environment, immersed as they are in many new and varied relationships.  相似文献   
997.
Individual motives for playing digital games have been studied from a variety of theoretical perspectives using different measurement instruments. However, an instrument that roots the social, rule-based narrative essence of digital games in a theory on human behavior acknowledging that not all behavior is consciously motivated has hitherto been lacking. A framework based on social cognitive theory that integrates these dimensions is proposed. After comparing the advantages of this framework to existing approaches, the development of a measurement instrument is discussed. This development concerns the generation and evaluation of an item pool and also testing the instrument for reliability and validity on different samples and different populations. Results suggest psychometric as well as theoretical soundness of the instrument.  相似文献   
998.
Why do people cooperate? We address this classic question by analyzing and discussing the role of reputation: people cooperate to maintain a positive reputation in their social environment. Reputation is a key element fueling a system of indirect reciprocity, where cooperators establish a good reputation and are thus more likely to receive future benefits from third parties. The tendencies to monitor, spread, and manage each other's reputation help explain the abundance of human cooperation with unrelated strangers. We review research on the phenomenon of reputation‐based cooperation in the domains of how people manage their reputation in response to varying cues of reputation, when reputation can promote cooperation, and individual differences in reputation management. We also propose three directions for future research: group stability and reputation‐based cooperation, solutions to cope with noise and biased reputation, and the relative efficiency of positive versus negative reputation systems.  相似文献   
999.
1000.
Metacognitive evaluations refer to the processes by which people assess their own cognitive operations with respect to their current goal. Little is known about whether this process is susceptible to social influence. Here we investigate whether nonverbal social signals spontaneously influence metacognitive evaluations. Participants performed a two-alternative forced-choice task, which was followed by a face randomly gazing towards or away from the response chosen by the participant. Participants then provided a metacognitive evaluation of their response by rating their confidence in their answer. In Experiment 1, the participants were told that the gaze direction was irrelevant to the task purpose and were advised to ignore it. The results revealed an effect of implicit social information on confidence ratings even though the gaze direction was random and therefore unreliable for task purposes. In addition, nonsocial cues (car) did not elicit this effect. In Experiment 2, the participants were led to believe that cue direction (face or car) reflected a previous participant's response to the same question—that is, the social information provided by the cue was made explicit, yet still objectively unreliable for the task. The results showed a similar social influence on confidence ratings, observed with both cues (car and face) but with an increased magnitude relative to Experiment 1. We additionally showed in Experiment 2 that social information impaired metacognitive accuracy. Together our results strongly suggest an involuntary susceptibility of metacognitive evaluations to nonverbal social information, even when it is implicit (Experiment 1) and unreliable (Experiments 1 and 2).  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