全文获取类型
收费全文 | 315篇 |
免费 | 19篇 |
出版年
2023年 | 6篇 |
2022年 | 3篇 |
2021年 | 5篇 |
2020年 | 6篇 |
2019年 | 5篇 |
2018年 | 10篇 |
2017年 | 7篇 |
2016年 | 10篇 |
2015年 | 13篇 |
2014年 | 11篇 |
2013年 | 34篇 |
2012年 | 5篇 |
2011年 | 12篇 |
2010年 | 12篇 |
2009年 | 10篇 |
2008年 | 11篇 |
2007年 | 19篇 |
2006年 | 9篇 |
2005年 | 15篇 |
2004年 | 7篇 |
2003年 | 8篇 |
2002年 | 5篇 |
2001年 | 5篇 |
1999年 | 3篇 |
1998年 | 3篇 |
1997年 | 4篇 |
1996年 | 5篇 |
1995年 | 3篇 |
1994年 | 5篇 |
1993年 | 4篇 |
1992年 | 9篇 |
1991年 | 6篇 |
1990年 | 5篇 |
1989年 | 4篇 |
1988年 | 3篇 |
1987年 | 6篇 |
1986年 | 4篇 |
1985年 | 4篇 |
1982年 | 3篇 |
1981年 | 2篇 |
1980年 | 3篇 |
1979年 | 7篇 |
1978年 | 4篇 |
1977年 | 2篇 |
1976年 | 2篇 |
1975年 | 4篇 |
1974年 | 2篇 |
1972年 | 2篇 |
1968年 | 1篇 |
1967年 | 1篇 |
排序方式: 共有334条查询结果,搜索用时 27 毫秒
151.
We investigated the role of spatial probabilities in target location during participants' performance of a visual search task. Experiments 1 and 2 demonstrated that spatial probabilities could serve as a powerful attentional bias that produced faster detection of targets in high-probability locations than of those in low- or random-probability locations. The effect could not be explained by repetition priming alone. Moreover, responses to targets in low-probability locations were slowed only when a distractor was present in the high-probability location. In Experiments 3-5, we compared the effects of spatial probability with an explicit endogenous cue and a salient exogenous cue. Facilitation due to spatial probability was independent of any benefit afforded by the explicit endogenous cue but interacted with the salient exogenous cue, such that the exogenous cue validity effect was compressed for targets in the high-probability location. Together, these results suggest that the spatial probabilities governing target location constitute a potent bias of visual processing and, as such, can be considered an attentional cue that differs from both typical explicit endogenous and salient exogenous cues. 相似文献
152.
Langfelder-Schwind E Kloza E Sugarman E Pettersen B Brown T Jensen K Marcus S Redman J;National Society of Genetic Counselors Subcommittee on Cystic Fibrosis Carrier Testing 《Journal of genetic counseling》2005,14(1):1-15
For over a decade, prenatal screening for cystic fibrosis (CF) has been considered a model for the integration of genetic testing into routine medical practice. Data from pilot studies and public policy discourse have led to recommendations by some professional organizations that CF screening should be offered or made available to pregnant women and their partners, and to couples planning a pregnancy. It is crucial that genetic counselors gain thorough understanding of the complexities of CF and the implications of positive test results, so that they may serve as a reliable, educated referral base and resource for health care providers and their patients. While not all pregnant women will be referred for genetic counseling prior to CF carrier testing, genetic counselors often will be asked to counsel clients after they have a positive test result, or who are found to be at increased risk. Genetic counselors can play an important role in providing accurate and current information as well as support for patients informed decisions. These recommendations were created by a multicenter working group of genetic counselors with expertise in CF and are based on personal clinical experience, review of pertinent English language medical articles, and reports of expert committees. The recommendations should not be construed as dictating an exclusive course of management, nor does the use of such recommendations guarantee a particular outcome. These recommendations do not displace a health care providers professional judgment based on the clinical circumstances of a particular client. 相似文献
153.
Maria Casteigne Erin M. O’Mara Kunz Joy Losee Liz Kerner 《Social and Personality Psychology Compass》2023,17(12):e12893
Perceptions of the COVID-19 virus varied drastically in the United States, with many people highly concerned by health-related consequences (realistic threats) and many others concerned by sociocultural implications (symbolic threats). Across three studies, we tested whether differing realistic and symbolic COVID-19 related threat perceptions varied along gender and political identity near the 2020 US Presidential Election. In all three studies, we found that realistic COVID-19 related threat perceptions were positively associated with a liberal political identity; this pattern did not vary by gender. In Studies 1 and 3, symbolic COVID-19 related threat perceptions were positively associated with a conservative political identity and also did not vary by gender. In Study 2, however, the association between symbolic threat and political identity did vary by gender. Symbolic COVID-19 related threat perceptions were positively associated with a conservative identity for men but not women; for women, threat and political identity were unrelated. 相似文献
154.
155.
Only recently have ethicists been invited into the clinical setting to offer recommendations about patient care decisions. This paper discusses this new role for ethicists from the perspective of content and process issues. Among content issues are the usual ethical dilemmas such as the aggressiveness of treatment, questions about consent, and alternative treatment options. Among process issues are those that relate to communication with the patient. The formal ethics consult is discussed, the steps taken in such a consult, and whether there should be a fee charged. We conclude with an examination of the risks and benefits of formal ethics consults. 相似文献
156.
David P. Wacker Wendy K. Berg Lucy Choisser Joy Smith 《Journal of applied behavior analysis》1989,22(3):261-273
The use of peer-training procedures by moderately mentally retarded adolescents was evaluated in two experiments. In Experiment 1, 2 students received instruction on peer-training skills to teach a vocational task to 7 classmates. Following instruction, both peer trainers were successful in teaching their classmates to perform the target task and a second untrained (generalization) task. In Experiment 2, 1 peer trainer taught 3 peers to use picture prompts to complete one or two complex vocational tasks. Following instruction by the peer trainer, the trainees independently used novel pictures on novel tasks. The results of both experiments indicate that peer training with moderately handicapped students can be an effective instructional procedure, with generalization occurring for both the trainers (Experiment 1) and the trainees (Experiment 2). 相似文献
157.
This investigation examined how staff in an elementary school district perceived their school psychologists and how these perceptions differed across components of service and staff groups. We developed a School Psychological Service Questionnaire and then analyzed responses from regular education teachers, special education teachers, principals, and school psychologists in an urban school district. Although the findings are numerous, most noteworthy are, first, that consumer groups in the district had different perceptions than school psychologists about how school psychologists allocate their time and how this time should be allocated in the future. Second, consumer perceptions of school psychologists' knowledge generally were favorable. Third, in terms of domains appropriate for involvement by school psychologists, a factor analysis of consumer ratings revealed three relatively clear dimensions of recommended service provision — special education activities, interpersonal or school-climate activities, and administrative responsibilities. Fourth, the helpfulness of school psychologists, as perceived by consumers, related positively to frequency of contact. Fifth, differences in perception of school psychological services were evident across staff groups. Finally, comparisons between master's level and doctoral level school psychologists suggested numerous differences in how the staff perceived these service providers. 相似文献
158.
Social dynamics of group courtship behavior in male red-sided garter snakes (Thamnophis sirtalis parietalis) 总被引:1,自引:0,他引:1
Mating in red-sided garter snakes is characterized by the formation of mating balls. Up to 100 males simultaneously court single females. The social dynamics of the formation of these mating balls was examined to determine whether the mating balls are formed simply because of a common attraction to the female or whether males are stimulated by the mating balls themselves. A sexually attractive female garter snake appears to be even more attractive to a male when she is being courted by other males than when she is alone. Male garter snakes courted females more actively when other males were also courting the female than when they were alone with her. There is a positive correlation between the number of additional males present and the amount of courtship activity shown by the test male toward the stimulus female. The extent to which the courtship activity of the test males was stimulated by the presence of additional courting males was not influenced by how actively the additional males courted. 相似文献
159.
Yumul Joy Noelle Crowe Louise Catroppa Cathy Anderson Vicki McKinlay Audrey 《Neuropsychology review》2022,32(3):631-650
Neuropsychology Review - Mild traumatic brain injury (mTBI) is common in children aged?<?5 years, however, less is known about their experience of post-concussive signs... 相似文献
160.