全文获取类型
收费全文 | 643篇 |
免费 | 64篇 |
专业分类
707篇 |
出版年
2024年 | 1篇 |
2023年 | 5篇 |
2022年 | 13篇 |
2021年 | 7篇 |
2020年 | 18篇 |
2019年 | 25篇 |
2018年 | 43篇 |
2017年 | 37篇 |
2016年 | 41篇 |
2015年 | 28篇 |
2014年 | 37篇 |
2013年 | 75篇 |
2012年 | 53篇 |
2011年 | 43篇 |
2010年 | 36篇 |
2009年 | 30篇 |
2008年 | 37篇 |
2007年 | 39篇 |
2006年 | 28篇 |
2005年 | 30篇 |
2004年 | 19篇 |
2003年 | 12篇 |
2002年 | 17篇 |
2001年 | 6篇 |
2000年 | 1篇 |
1999年 | 4篇 |
1998年 | 4篇 |
1997年 | 2篇 |
1996年 | 2篇 |
1995年 | 2篇 |
1994年 | 3篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1989年 | 1篇 |
1986年 | 1篇 |
1985年 | 1篇 |
1981年 | 2篇 |
1979年 | 1篇 |
1972年 | 1篇 |
排序方式: 共有707条查询结果,搜索用时 15 毫秒
151.
Kristin Shrader-Frechette 《Science and engineering ethics》2011,17(1):75-107
Merck suppressed data on harmful effects of its drug Vioxx, and Guidant suppressed data on electrical flaws in one of its
heart-defibrillator models. Both cases reveal how financial conflicts of interest can skew biomedical research. Such conflicts
also occur in electric-utility-related research. Attempting to show that increased atomic energy can help address climate
change, some industry advocates claim nuclear power is an inexpensive way to generate low-carbon electricity. Surveying 30
recent nuclear analyses, this paper shows that industry-funded studies appear to fall into conflicts of interest and to illegitimately
trim cost data in several main ways. They exclude costs of full-liability insurance, underestimate interest rates and construction
times by using “overnight” costs, and overestimate load factors and reactor lifetimes. If these trimmed costs are included,
nuclear-generated electricity can be shown roughly 6 times more expensive than most studies claim. After answering four objections,
the paper concludes that, although there may be reasons to use reactors to address climate change, economics does not appear
to be one of them. 相似文献
152.
Relations of toddlers' observed negative affect in high- and low-threat contexts to maternal perceptions of their toddlers' internalizing problems and to mothers' responses to emotions (RTE) for fear and sadness were examined. Child-driven, parent-driven, and reciprocal transactional models across 1 year were directly compared. Two-year-old toddlers (N = 106) participated in lab-based activities to elicit distress, and their negative affect was coded. Mothers completed measures of their child's internalizing behaviors and their responses to their toddler's fear and sadness at ages 2 and 3. At age 2, only negative affect in low-threat contexts was associated with greater internalizing problems. Mothers' punishing and minimizing RTE at age 2 predicted an increase in internalizing problems across 1 year. Age 2 internalizing problems predicted an increase in mother's use of supportive RTE over time. Results highlight the importance of considering the context of toddlers' negative affective displays and supported a reciprocal conceptualization of toddlers' internalizing behaviors and mothers' RTE. 相似文献
153.
Piderman KM Lapid MI Stevens SR Ryan SM Somers KJ Kronberg MT Clark MM Rummans TA 《The journal of pastoral care & counseling : JPCC》2011,65(1-2):3:1-311
This study's aims were to describe the spirituality of depressed elderly psychiatric inpatients and to examine associations among spirituality, depression, and quality of life (QOL). Forty-five persons participated. Most reported frequent, stable spiritual practices and experiencing spiritual comfort and guidance. Some reported spiritual distress and changes in spirituality. During hospitalization, participants demonstrated increased spiritual well-being (SWB) and peacefulness, and reduced hopelessness, worthlessness, and guilt. Positive associations were found between SWB and QOL and negative associations between SWB and depression. 相似文献
154.
Lily A. Krauss Christina K. Wilson Elena Padrón Kristin W. Samuelson 《Journal of aggression, maltreatment & trauma》2016,25(4):421-435
Although research has documented the detrimental effects of maternal trauma on child behavior (Lambert, Holzer, & Hasbun, 2014), the role of extended family support in potentially mitigating the effects of intergenerational transmission of trauma is not clearly understood. With a diverse community sample of 52 trauma-exposed mothers and their children between the ages of 7 and 12, we investigated relationships between kinship social support, maternal trauma exposure severity, maternal posttraumatic stress disorder (PTSD) symptom severity, and child behavioral problems. Results showed that kinship social support was negatively related to maternal trauma exposure severity, maternal PTSD symptom severity, child internalizing behaviors, and child externalizing behaviors. Additionally, kinship social support moderated the relationship between maternal trauma exposure severity and child internalizing behaviors. These results have implications in the implementation of interventions aimed at supporting diverse families facing trauma that incorporate extended family networks. 相似文献
155.
156.
Jonathan B. Freeman Kristin Pauker Nalini Ambady 《Journal of experimental social psychology》2010,46(1):179-185
Although the outcomes of race categorization have been studied in detail, the temporal dynamics of real-time processing of race remain elusive. We measured participants’ hand movements en route to one of two race-category alternatives by recording the streaming x, y coordinates of the computer mouse. Study 1 showed that, when categorizing White and Black computer-generated faces that featurally overlapped with the opposite race, mouse trajectories showed a continuous spatial attraction toward the opposite category. Moreover, these race-atypical White and Black targets induced spatial attraction effects that had different temporal signatures. Study 2 showed that, when categorizing real faces that varied along a continuum of racial ambiguity, graded increases in ambiguity led to corresponding increases in trajectories’ attraction to the opposite category and trajectories’ movement complexity. These studies provide evidence for temporally dynamic competition across perceptions of race, where simultaneously and partially-active race categories continuously evolve into single categorical outcomes over time. Moreover, the findings show how different social category cues may exert different dynamic patterns of influence over the real-time processing that culminates in categorizations of others. 相似文献
157.
One of the most replicable findings reported in the social psychological literature is the cross-race memory effect. We argue this effect derives from higher-order interactions among social cues that determine the perceived relevance of a face to an observer. The current research tested this hypothesis by examining the combined influences of eye gaze direction and race on face memory. The physical subtlety of eye gaze belies its powerful influence on social perception, and in this case helps specify the relevance of same- versus other-race faces. We found that only in faces making direct eye contact—not those displaying averted eye gaze—was the cross-race memory effect evident. Likewise, only in same-race faces did direct relative to averted-gaze enhance face memory. These findings have implications for our general understanding of the combinatorial nature of social perception and help clarify the underlying cause of the cross-race memory effect. 相似文献
158.
Kelli E. Hill Kristin R. Griffith Caio F. Miguel 《Journal of applied behavior analysis》2020,53(1):188-208
The purpose of the current study was to evaluate the effects of equivalence-based instruction (EBI) on learning to play individual notes and simple songs on the piano. Participants were 4 typically developing children and 4 children with a diagnosis of autism spectrum disorder (ASD). They were exposed to a series of auditory–visual matching-to-sample procedures using musical stimuli. Following training, participants were tested on the emergence of novel untrained relations and generalization in the form of playing two songs on a keyboard. Results suggest that the EBI was effective in teaching piano playing skills with both typically developing children and children with ASD. The success of this procedure is indicative of the wide-ranging applications of EBI to novel and creative domains. 相似文献
159.
The differential effects of thalamus and basal ganglia on facial emotion recognition 总被引:1,自引:0,他引:1
This study examined if subcortical stroke was associated with impaired facial emotion recognition. Furthermore, the lateralization of the impairment and the differential profiles of facial emotion recognition deficits with localized thalamic or basal ganglia damage were also studied. Thirty-eight patients with subcortical strokes and 19 matched normal controls volunteered to participate. The participants were individually presented with morphed photographs of facial emotion expressions over multiple trials. They were requested to classify each of these morphed photographs according to Ekman's six basic emotion categories. The findings indicated that the clinical participants had impaired facial emotion recognition, though no clear lateralization pattern of impairment was observed. The patients with localized thalamic damage performed significantly worse in recognizing sadness than the controls. Longitudinal studies on patients with subcortical brain damage should be conducted to examine how cognitive reorganization post-stroke would affect emotion recognition. 相似文献
160.
Lemhöfer K Schriefers H Jescheniak JD 《Journal of experimental psychology. Learning, memory, and cognition》2006,32(2):437-442
In many languages, the production of noun phrases requires the selection of gender-marked elements like determiners or inflectional suffixes. There is a recent debate as to whether the selection of freestanding gender-marked elements, such as determiners, follows the same processing mechanisms as the selection of bound gender-marked morphemes, such as adjective suffixes. Most of the evidence on which this debate is based relates to the gender-congruency effect in picture-word interference experiments. In the present article, the authors address this issue with a pure picture-naming task, extending previous work in German (H. Schriefers, J. D. Jescheniak, & A. Hantsch, 2005). The results of the present study on noun phrase production in Dutch show that both types of gender-marked morphemes are selected via the same basic processing mechanisms. 相似文献