全文获取类型
收费全文 | 995篇 |
免费 | 36篇 |
出版年
2023年 | 7篇 |
2022年 | 3篇 |
2021年 | 14篇 |
2020年 | 20篇 |
2019年 | 18篇 |
2018年 | 17篇 |
2017年 | 34篇 |
2016年 | 24篇 |
2015年 | 16篇 |
2014年 | 19篇 |
2013年 | 102篇 |
2012年 | 45篇 |
2011年 | 47篇 |
2010年 | 35篇 |
2009年 | 30篇 |
2008年 | 54篇 |
2007年 | 55篇 |
2006年 | 41篇 |
2005年 | 47篇 |
2004年 | 50篇 |
2003年 | 32篇 |
2002年 | 46篇 |
2001年 | 15篇 |
2000年 | 15篇 |
1999年 | 13篇 |
1998年 | 20篇 |
1997年 | 13篇 |
1996年 | 6篇 |
1995年 | 10篇 |
1994年 | 11篇 |
1993年 | 13篇 |
1992年 | 17篇 |
1991年 | 12篇 |
1990年 | 10篇 |
1989年 | 7篇 |
1988年 | 14篇 |
1987年 | 5篇 |
1986年 | 8篇 |
1985年 | 14篇 |
1984年 | 14篇 |
1983年 | 11篇 |
1982年 | 7篇 |
1981年 | 13篇 |
1980年 | 7篇 |
1979年 | 4篇 |
1978年 | 5篇 |
1977年 | 3篇 |
1976年 | 2篇 |
1970年 | 1篇 |
1969年 | 1篇 |
排序方式: 共有1031条查询结果,搜索用时 31 毫秒
161.
Cynthia Townley 《Science and engineering ethics》2010,16(2):295-301
This paper investigates reasons for practices and policies that are designed to promote higher levels of enrolment by women
in scientific disciplines. It challenges the assumptions and problematic arguments of a recent article questioning their legitimacy.
Considering the motivations for and merits of such programs suggests a practical response to the question of whether there
should be programs to attract female science and engineering students. 相似文献
162.
Lauren W. Kronenfeld Lauren Reba-Harrelson Ann Von Holle Mae Lynn Reyes Cynthia M. Bulik 《Body image》2010,7(2):131-136
Body dissatisfaction in women in the United States is common. We explored how women from various racial and ethnic groups used figural stimuli by exploring differences in current and preferred silhouette, and their discrepancy. We surveyed 4023 women aged 25–45 in an online investigation. Participants were identified using a national quota-sampling procedure. Asian women chose a smaller silhouette to represent their current body size, which did not remain significant after adjusting for self-reported BMI. After controlling for BMI, African American women selected a smaller silhouette than White women to represent their current size. Both African American and women reporting “Other” race preferred larger silhouettes than White women even after controlling for BMI. The discrepancy score revealed lower body dissatisfaction among African American than White women. Understanding factors that promote body satisfaction differentially across racial and ethnic groups could become a tool in appropriately tailored interventions designed to prevent eating disorders. 相似文献
163.
164.
Women's sexual and reproductive health in post-socialist Georgia: does internal displacement matter?
CONTEXT: Persons displaced by armed conflicts, natural disasters or other events are at increased risk for health problems. The Republic of Georgia has a substantial population of internally displaced women who may face elevated risks of STIs and pelvic inflammatory disease (PID). METHODS: The 1999 Georgia Reproductive Health Survey was used to examine the prevalence of self-reported STI and PID diagnoses among displaced and nondisplaced sexually experienced women. Multivariate analyses were conducted to determine whether displacement is associated with STI and PID risk, and whether the behavioral and socioeconomic factors associated with these diagnoses differ between internally displaced women and the general population. RESULTS: In models that controlled for behavioral factors only, displacement was associated with elevated odds of PID diagnosis (odds ratio, 1.3), but the relationship was only marginally significant when socioeconomic factors were added (1.3). Displacement was not associated with STI diagnosis. The factors associated with STI and PID diagnoses among displaced women generally differed from those in the general population, but access to medical care and previous STI diagnosis were associated with PID diagnosis in both groups. Among nondisplaced women, residing in the capital city was associated with increased odds of STI diagnosis (2.2) but reduced odds of PID diagnosis (0.8). CONCLUSIONS: These findings highlight the importance of displacement status in determining a woman's reproductive health risks, and underscore the complex relationships between behavioral and socioeconomic variables and the elevation of STI and PID risk. 相似文献
165.
Is counter-terrorism policy evidence-based? What works, what harms, and what is unknown. One of the central concerns surrounding counter-terrorism interventions today, given the attention and money spent on them, is whether such interventions are effective. To explore this issue, we conducted a general review of terrorism literature as well as a Campbell systematic review on counter-terrorism strategies. In this article, we summarize some of our findings from these works. Overall, we found an almost complete absence of evaluation research on counter-terrorism strategies and conclude that counter-terrorism policy is not evidence-based. The findings of this review emphasise the need for government leaders, policy makers, researchers, and funding agencies to include and insist on evaluations of the effectiveness of these programs in their agendas. 相似文献
166.
The relative advantage of the left (LH) over the right hemisphere (RH) in processing of verbal material for most individuals is well established. Nevertheless, several studies have reported the ability of positively and negatively valenced stimuli to enhance and reverse, respectively, the usual LH>RH asymmetry. These studies, however, have used baseline stimuli that differed from emotional stimuli on two dimensions (i.e., valence and verbal/nonverbal nature), creating interpretive difficulties as to whether differences across these conditions are due to differences in valence or the verbal/nonverbal nature of the primes used in the baseline condition. In addition, these studies, along with many others in the literature, have failed to control for potential confounding effects of arousal. Emotional stimuli vary on dimensions of valence as well as arousal and arousal may be asymmetrically presented in the brain therefore contributing to observed asymmetries. Taken together, these considerations underscore the importance of controlling for both valence as well as arousal in any investigation of the effects of emotional stimuli. The objectives of the present study were twofold: (1) to employ an appropriate baseline condition to render emotional stimuli vs. baseline stimuli comparisons meaningful and (2) to examine the extent to which emotional verbal stimuli, equated for arousal level, alter the expected LH>RH asymmetry in a consonant trigram task. Results demonstrated that when LH lateralized consonant trigram presentations were preceded by a positive prime, an enhancement of the expected LH>RH asymmetry was observed. In contrast, when trigram presentations lateralized to the RH were preceded by a negative prime, a complete reversal of the typical asymmetry was found with RH>LH performance. These results are analogous to the pattern of relative hemispheric activations observed for various mood states. Controlling for arousal in studies investigating asymmetries associated with emotional processing may allow more clear interpretation of data intended to test predictions of neuropsychological models of emotion. Moreover, equating stimuli on the dimension of arousal as well as valence may shed more light on conflicting findings with regard to perception vs. expression of emotion. 相似文献
167.
Intersectional Identities and the Politics of Altruistic Care in a Low-Income, Urban Community 总被引:1,自引:0,他引:1
Jacqueline S. Mattis Nyasha A. Grayman Sheri-Ann Cowie Cynthia Winston Carolyn Watson Daisy Jackson 《Sex roles》2008,59(5-6):418-428
The literatures on the ways in which social identity and social position (e.g., gender, class, race) inform altruism have developed orthogonally. In this community-based qualitative study we use intersectionality theory to explore the complex ways in which social identity and social structures jointly influence altruism among African American adults (n?=?40) in an urban, economically distressed housing community in New York City. Content analysis of participants’ narratives reveals the ways in which gender, race, ethnicity, class, age, and urbanicity work in tandem to create differential patterns of vulnerability, differential needs, differential commitments to caring for particular subgroups, and informs how altruists are perceived by others. The implications of this work for future research on altruism are highlighted. 相似文献
168.
Shiels K Hawk LW Lysczek CL Tannock R Pelham WE Spencer SV Gangloff BP Waschbusch DA 《Journal of abnormal child psychology》2008,36(6):903-913
Working memory is one of several putative core neurocognitive processes in attention-deficit/hyperactivity disorder (ADHD).
The present work seeks to determine whether visual–spatial working memory is sensitive to motivational incentives, a laboratory
analogue of behavioral treatment. Participants were 21 children (ages 7–10) with a diagnosis of ADHD-combined type. Participants
completed a computerized spatial span task designed to assess storage of visual–spatial information (forward span) and manipulation
of the stored information (backward span). The spatial span task was completed twice on the same day, once with a performance-based
incentive (trial-wise feedback and points redeemable for prizes) and once without incentives. Participants performed significantly
better on the backward span when rewarded for correct responses, compared to the no incentive condition. However, incentives
had no effect on performance during the forward span. These findings may suggest the use of motivational incentives improved
manipulation, but not storage, of visual–spatial information among children with ADHD. Possible explanations for the differential
incentive effects are discussed, including the possibility that incentives prevented a vigilance decrement as task difficulty
and time on task increased. 相似文献
169.
Do 18-month-olds understand that an agent's false belief can be corrected by an appropriate, though not an inappropriate, communication? In Experiment 1, infants watched a series of events involving two agents, a ball, and two containers: a box and a cup. To start, agent1 played with the ball and then hid it in the box, while agent2 looked on. Next, in agent1's absence, agent2 moved the ball from the box to the cup. When agent1 returned, agent2 told her "The ball is in the cup!" (informative-intervention condition) or "I like the cup!" (uninformative-intervention condition). During test, agent1 reached for either the box (box event) or the cup (cup event). In the informative-intervention condition, infants who saw the box event looked reliably longer than those who saw the cup event; in the uninformative-intervention condition, the reverse pattern was found. These results suggest that infants expected agent1's false belief about the ball's location to be corrected when she was told "The ball is in the cup!", but not "I like the cup!". In Experiment 2, agent2 simply pointed to the ball's new location, and infants again expected agent1's false belief to be corrected. These and control results provide additional evidence that infants in the second year of life can attribute false beliefs to agents. In addition, the results suggest that by 18 months of age infants expect agents' false beliefs to be corrected by relevant communications involving words or gestures. 相似文献
170.
Tharinger DJ Finn SE Austin CA Gentry LB Bailey KE Parton VT Fisher ME 《Journal of personality assessment》2008,90(6):547-558
Including a family session in a child assessment can significantly advance the assessor's and parents' understanding of the child's problems and enhance the likelihood that parents will follow through on recommendations after the assessment. A family session allows the assessor to observe the child in the family context, test systemic hypotheses, better understand the meaning of individual test results, and try out possible interventions. A family session may also help parents see systemic aspects of their child's problems, help the child feel less blamed, foster positive experiences among family members, and offer the family a glimpse of family therapy. We describe methods and techniques for structuring family sessions and offer guidance on preparing for and conducting such sessions depending on one's case conceptualization. Detailed case examples illustrate each technique and demonstrate the immediate and subsequent impact of family sessions as well as their therapeutic value. We also address common clinical and pragmatic issues. 相似文献