全文获取类型
收费全文 | 2311篇 |
免费 | 78篇 |
专业分类
2389篇 |
出版年
2023年 | 15篇 |
2022年 | 15篇 |
2021年 | 14篇 |
2020年 | 34篇 |
2019年 | 41篇 |
2018年 | 48篇 |
2017年 | 58篇 |
2016年 | 58篇 |
2015年 | 39篇 |
2014年 | 57篇 |
2013年 | 267篇 |
2012年 | 82篇 |
2011年 | 95篇 |
2010年 | 69篇 |
2009年 | 60篇 |
2008年 | 85篇 |
2007年 | 84篇 |
2006年 | 78篇 |
2005年 | 71篇 |
2004年 | 89篇 |
2003年 | 82篇 |
2002年 | 88篇 |
2001年 | 35篇 |
2000年 | 41篇 |
1999年 | 39篇 |
1998年 | 37篇 |
1997年 | 28篇 |
1996年 | 31篇 |
1995年 | 51篇 |
1994年 | 39篇 |
1993年 | 36篇 |
1992年 | 26篇 |
1991年 | 35篇 |
1990年 | 22篇 |
1989年 | 29篇 |
1988年 | 24篇 |
1987年 | 20篇 |
1986年 | 27篇 |
1985年 | 33篇 |
1984年 | 32篇 |
1983年 | 35篇 |
1982年 | 26篇 |
1981年 | 36篇 |
1980年 | 17篇 |
1979年 | 28篇 |
1978年 | 25篇 |
1977年 | 23篇 |
1976年 | 21篇 |
1975年 | 21篇 |
1973年 | 12篇 |
排序方式: 共有2389条查询结果,搜索用时 15 毫秒
181.
182.
Visual information conveyed by iconic hand gestures and visible speech can enhance speech comprehension under adverse listening conditions for both native and non‐native listeners. However, how a listener allocates visual attention to these articulators during speech comprehension is unknown. We used eye‐tracking to investigate whether and how native and highly proficient non‐native listeners of Dutch allocated overt eye gaze to visible speech and gestures during clear and degraded speech comprehension. Participants watched video clips of an actress uttering a clear or degraded (6‐band noise‐vocoded) action verb while performing a gesture or not, and were asked to indicate the word they heard in a cued‐recall task. Gestural enhancement was the largest (i.e., a relative reduction in reaction time cost) when speech was degraded for all listeners, but it was stronger for native listeners. Both native and non‐native listeners mostly gazed at the face during comprehension, but non‐native listeners gazed more often at gestures than native listeners. However, only native but not non‐native listeners' gaze allocation to gestures predicted gestural benefit during degraded speech comprehension. We conclude that non‐native listeners might gaze at gesture more as it might be more challenging for non‐native listeners to resolve the degraded auditory cues and couple those cues to phonological information that is conveyed by visible speech. This diminished phonological knowledge might hinder the use of semantic information that is conveyed by gestures for non‐native compared to native listeners. Our results demonstrate that the degree of language experience impacts overt visual attention to visual articulators, resulting in different visual benefits for native versus non‐native listeners. 相似文献
183.
184.
The prediction of creative performance from ideation has shown promise, but questions remain. In this study, the relationship of ideational behavior and the creative performance of elementary school children (N = 255) was examined across 6 domains of creative performance: science, mathematics, technology, fine arts, music, and writing. Importantly, the potential confounding of grade and gender were controlled and creative self-efficacy tested as a moderator. Results indicated that ideational behavior explained a unique portion of variance in creative performance, above and beyond the potential confounding factors. The moderating effect of creative self-efficacy was confirmed, but only in the domain of science. Interestingly, ideation was more strongly related to creative activity than was creative self-efficacy in every domain except art and writing. Limitations and future research are discussed. 相似文献
185.
186.
Ricker C Lagos V Feldman N Hiyama S Fuentes S Kumar V Gonzalez K Palomares M Blazer K Lowstuter K MacDonald D Weitzel J 《Journal of genetic counseling》2006,15(6):505-514
Background: Cancer genetic counseling and testing is a standard of care option for appropriate families and can identify individuals at increased risk prior to diagnosis, when prevention or detection strategies are most effective. Despite documented efficacy of cancer risk reduction in high-risk individuals, underserved and minority individuals have a disproportionate cancer burden and limited access to genetic counseling. Methods: A needs assessment survey documented gaps in knowledge and interest in prevention. Satellite clinics were established at two indigent healthcare systems. Cancer genetics CME lectures were conducted and referral guidelines disseminated to clinicians who referred patients for counseling. Results: An increase in clinician knowledge was demonstrated post-CME and reflected by quality referrals. Eighty-eight percent of patients kept their appointments. In the predominantly Latina6 (n=77) clinic population, 71.4% were affected with cancer, and 17 mutation positive families were identified. Preliminary data shows a positive impact on patients' motivation and behavior. The majority has expressed satisfaction and reduction in anxiety. Conclusions: This study demonstrates feasibility and acceptability of cancer genetics services in this population, suggesting the potential to reduce cancer morbidity in underserved, high-risk families.“Latino” is the most common census term for individuals of Spanish, Mexican, Central and South American, Cuban, or Puerto Rican descent, referring to ethnicity, and is generally considered a more ethnically/culturally based term for individuals of the aforementioned groups. As this cohort is female the feminine noun “Latina” is used 相似文献
187.
This investigation extends previous research documenting differences in Chinese and European American infants' facial expressivity. Chinese girls adopted by European American families, nonadopted Mainland Chinese girls, nonadopted Chinese American girls, and nonadopted European American girls responded to emotionally evocative slides and an odor stimulus. European American girls smiled more than Mainland Chinese and Chinese American girls and scored higher than Mainland Chinese girls for disgust-related expressions and overall expressivity. Adopted Chinese girls produced more disgust-related expressions than Mainland Chinese girls. Self-reported maternal strictness, aggravation, positive expressiveness, and cultural identification correlated with children's facial responses, as did number of siblings and adults in the home. Results suggest that culture and family environment influences facial expressivity, creating differences among children of the same ethnicity. 相似文献
188.
In this study, we examined common measures of agency (AG), communion (CM), and unmitigated agency (UA) and unmitigated communion (UC) using the interpersonal circumplex and Five-factor models (FFM) as conceptual frameworks. AG aligned with interpersonal dominance in circumplex space and related positively to conscientiousness and inversely to neuroticism. CM corresponded with interpersonal affiliation and related positively to conscientiousness. UA was consistent with hostile-dominance and related to lower conscientiousness and higher neuroticism. UC related to friendly submission but was not strongly represented in the circumplex and did not relate to the FFM. Each construct showed distinct social-emotional correlates. These findings support the convergent and divergent properties of the constructs but suggest that additional attention to the conceptual definition and measurement of UC is warranted. 相似文献
189.
This paper examines the development of perseverative reaching in the A-not-B task. We describe two recent models that view perseveration as a sign of developmental progress toward stability. In Experiment 1, we test the novel prediction from both models that very young infants should not perseverate in the A-not-B task whereas older infants should. We tracked infants' behavior monthly on the A-not-B task and found that infants reached correctly at 5 months, and only perseverated at 7 and 8 months of age. Experiment 2 provides further evidence on the role of motor development in the emergence of perseveration by exploring the connection between perseveration and detailed changes in reach kinematics in two infants across the first year. These data together suggest that perseveration is a sign of developmental achievement on the path to stable and flexible behavior. 相似文献
190.
Gregory PT Gregory LA 《Journal of comparative psychology (Washington, D.C. : 1983)》2006,120(3):262-268
A common response of animals to physical restraint is tonic immobility. The authors observed the behavior of garter snakes, Thamnophis elegans, in the field to determine the frequency of immobility as a response to handling. Most snakes fled after release, but the remainder remained immobile, sometimes on their backs (supination), for up to 10 min. Immobility was seen most often in pregnant snakes, which also were more likely than other snakes not to have moved before capture. Failure to move, either before or after capture, might be a consequence of the limited locomotory ability of gravid snakes. However, the lack of observations of interactions between snakes and their natural predators impedes researchers' understanding of the antipredator value, if any, of tonic immobility. 相似文献