全文获取类型
收费全文 | 2656篇 |
免费 | 104篇 |
国内免费 | 1篇 |
专业分类
2761篇 |
出版年
2023年 | 20篇 |
2022年 | 16篇 |
2021年 | 25篇 |
2020年 | 53篇 |
2019年 | 65篇 |
2018年 | 92篇 |
2017年 | 76篇 |
2016年 | 74篇 |
2015年 | 70篇 |
2014年 | 58篇 |
2013年 | 294篇 |
2012年 | 106篇 |
2011年 | 101篇 |
2010年 | 76篇 |
2009年 | 57篇 |
2008年 | 96篇 |
2007年 | 98篇 |
2006年 | 87篇 |
2005年 | 56篇 |
2004年 | 78篇 |
2003年 | 46篇 |
2002年 | 52篇 |
2001年 | 124篇 |
2000年 | 119篇 |
1999年 | 75篇 |
1998年 | 19篇 |
1997年 | 30篇 |
1996年 | 23篇 |
1994年 | 19篇 |
1992年 | 41篇 |
1991年 | 55篇 |
1990年 | 39篇 |
1989年 | 44篇 |
1988年 | 44篇 |
1987年 | 30篇 |
1986年 | 18篇 |
1985年 | 26篇 |
1984年 | 23篇 |
1983年 | 19篇 |
1982年 | 14篇 |
1981年 | 15篇 |
1979年 | 20篇 |
1976年 | 15篇 |
1974年 | 18篇 |
1973年 | 18篇 |
1971年 | 19篇 |
1970年 | 15篇 |
1969年 | 17篇 |
1968年 | 17篇 |
1967年 | 17篇 |
排序方式: 共有2761条查询结果,搜索用时 8 毫秒
211.
Walker Chloe J. Williams Chelsea Derlan Winter Marcia A. Everhart Robin S. 《Journal of child and family studies》2022,31(6):1621-1629
Journal of Child and Family Studies - The current study examined how African American children’s experiences of perceived personal racial discrimination and perceived vicarious racial... 相似文献
212.
213.
In agreement with the hypothesis of differential treatment of the intrinsic (color, shape, category…) and extrinsic (position, orientation…) visual characteristics along the ventral and dorsal pathways of the visual system (Milner & Goodale, 1995), the study of temporal order judgment (TOJ) of the variation of two visual attributes highlighted the perceptual asynchrony even though these changes occur synchronously. In this context, we investigated the role of action in the perception of perceptual asynchrony, especially the effect of a reaching movement on the TOJ of position and color changes of a target occurring at different times of movement execution. In the absence of voluntary action, the point of subjective simultaneity (PSS) shows that the color changes must occurr 46.6 ms before the change of position to give rise to a synchronous perception of these two changes. Performing a reaching movement reduced significantly the PSS (12.4 ms), but only if the changes occur near movement end-point. If changes occur during movement execution, the PSS (40.2 ms) was not different from that obtained in the perceptual condition. These results suggest that endogenous signals associated with voluntary motor action contribute to the reduction of perceptual asynchrony in relation to the goal of the action. We discuss the possibility that, in the context of the action, the motor system contributes to the binding of objects sensory attributes as well as to the sense of agency. 相似文献
214.
215.
E. Mark Cummings Rebecca Y. M. Cheung Kalsea Koss Patrick T. Davies 《Journal of abnormal child psychology》2014,42(7):1153-1166
Despite calls for process-oriented models for child maladjustment due to heightened marital conflict in the context of parental depressive symptoms, few longitudinal tests of the mechanisms underlying these relations have been conducted. Addressing this gap, the present study examined multiple factors longitudinally that link parental depressive symptoms to adolescent adjustment problems, building on a conceptual model informed by emotional security theory (EST). Participants were from 320 families (158 boys, 162 girls), including mothers and fathers, who took part when their children were in kindergarten (T1), second (T2), seventh (T3), eighth (T4) and ninth (T5) grades. Parental depressive symptoms (T1) were related to changes in adolescents’ externalizing and internalizing symptoms (T5), as mediated by parents’ negative emotional expressiveness (T2), marital conflict (T3), and emotional insecurity (T4). Evidence was thus advanced for emotional insecurity as an explanatory process in the context of parental depressive symptoms. 相似文献
216.
Valerie S. Harder Victoria N. Mutiso Lincoln I. Khasakhala Heather M. Burke David C. Rettew Masha Y. Ivanova David M. Ndetei 《Journal of psychopathology and behavioral assessment》2014,36(4):580-590
Data on youth emotional and behavioral problems from societies in Sub-Saharan Africa are lacking. This may be due to the fact that few youth mental health assessments have been tested for construct validity of syndrome structure across multicultural societies that include developing countries, and almost none have been tested in Sub-Saharan Africa. The Youth Self-Report (YSR), for example, has shown great consistency of its syndrome structure across many cultures, yet data from only one developing country in Sub-Saharan Africa have been included. In this study, we test the factor structure of YSR syndromes among Kenyan youth ages 11–18 years from an informal settlement in Nairobi, Kenya and examine sex-differences in levels of emotional and behavioral problems. We find the eight syndrome structure of the YSR to fit these data well (Root Mean Square Error of Approximation = 0.049). While Kenyan girls have significantly higher internalizing (Anxious/Depressed, Withdrawn/Depressed, Somatic) problem scores than boys, these differences are of similar magnitude to published multicultural findings. The results support the generalizability of the YSR syndrome structure to Kenyan youth and are in line with multicultural findings supporting the YSR as an assessment of emotional and behavioral problems in diverse societies. 相似文献
217.
We conducted two studies to explain inconsistent findings on the effect of resource inequality based on two properties of heterogeneity: (a) level of inequality and (b) asymmetry of resource distribution. We confirmed that symmetrically heterogeneous groups cooperated less than homogeneous groups did. We also found that larger resource inequality led to less cooperation. More importantly, the effect of inequality was different among groups with different distributions of resources – cooperation declined in groups with a symmetrical distribution of resources but did not decline in groups with a hegemonic distribution. Hegemonic distribution also affected psychological states as resource inequality changed. High endowment members reported higher self-efficacy when distribution was hegemonic than symmetric. However, they also reported more fear of being a sucker in hegemonic groups. 相似文献
218.
Myra C. Y. Lee 《Journal of Academic Ethics》2014,12(4):299-316
Cultural ethical dilemmas occur when ethical research practices, as prescribed by the research ethics codes of Western research institutions, conflict with the cultural and social norms of non-Western researchers and their participants. Thus, insider-researchers working with participants from similar cultural backgrounds may experience ethical dilemmas that result in disconcerting cultural estrangement from their communities. Using reflexive narratives, the author identifies moments of cultural ethical dilemmas that necessitate a choice between two competing sets of values. Working out of a Western university, the narratives reflect on cultural ethical dilemmas relating to non-coercion, confidentiality, and beneficence, encountered during interviews in the researcher’s community. Analyzed through the lens of Confucian social and ethical behavior, the paper asks whether there is a need for East–west polarization, or whether research ethics codes based on Western worldviews can be reconciled with Confucian worldviews. The paper suggests the “Middle Way” approach to reconciling and integrating the diverse worldviews of ethics, through the use of an ethical reflexive process that engenders trust in the research process and resolves cultural ethical dilemmas. 相似文献
219.
This paper develops a theory of analog representation. We first argue that the mark of the analog is to be found in the nature of a representational system's interpretation function, rather than in its vehicles or contents alone. We then develop the rulebound structure theory of analog representation, according to which analog systems use interpretive rules that map syntactic structural features onto semantic structural features. The theory involves three degree-theoretic measures that capture three independent ways in which a system can be more or less analog. We explain how our theory improves upon prior accounts of analog representation, provides plausible diagnoses for novel challenge cases, extends to hybrid systems that are partially analog and partially symbolic, and accounts for some of the advantages and disadvantages of representing analogically versus symbolically. 相似文献
220.
Y Nakajima 《Perception》1987,16(4):485-520
An attempt to construct a general theory of duration perception is presented. First, four experiments are reported in which the supplement hypothesis, on the relation between two or three empty durations, was examined: the subjective duration of a subjectively empty time interval is directly proportional to its physical duration plus a constant of approximately 80 ms. This hypothesis could be applied to the ratio judgments of auditorily marked empty durations between 40 and 600 ms given serially. It could also explain the discrepancies between musically notated rhythms and the corresponding physical performed rhythms in very simple rhythm patterns consisting of three tones. Next, three earlier experiments on discriminations of empty durations marked by sound bursts were also reanalyzed. Within the range 40-600 ms, the absolute just noticeable difference of an empty duration was almost directly proportional to the standard duration plus a constant of about 80 ms. If the supplement hypothesis is accepted, this means that the relative just noticeable difference of the subjective duration was constant. Finally, the processing time hypothesis is presented: subjective duration is directly proportional to the physical time required to process the given empty duration. This processing is considered to begin with the detection of the first marker, and to end approximately 80 ms after the detection of the second marker. 相似文献