全文获取类型
收费全文 | 3613篇 |
免费 | 50篇 |
专业分类
3663篇 |
出版年
2024年 | 18篇 |
2023年 | 28篇 |
2022年 | 30篇 |
2021年 | 36篇 |
2020年 | 69篇 |
2019年 | 84篇 |
2018年 | 112篇 |
2017年 | 109篇 |
2016年 | 124篇 |
2015年 | 105篇 |
2014年 | 88篇 |
2013年 | 399篇 |
2012年 | 163篇 |
2011年 | 202篇 |
2010年 | 128篇 |
2009年 | 113篇 |
2008年 | 157篇 |
2007年 | 148篇 |
2006年 | 134篇 |
2005年 | 124篇 |
2004年 | 115篇 |
2003年 | 115篇 |
2002年 | 124篇 |
2001年 | 60篇 |
2000年 | 52篇 |
1999年 | 44篇 |
1998年 | 54篇 |
1997年 | 31篇 |
1996年 | 46篇 |
1995年 | 40篇 |
1994年 | 30篇 |
1993年 | 35篇 |
1992年 | 39篇 |
1991年 | 34篇 |
1990年 | 28篇 |
1989年 | 26篇 |
1988年 | 28篇 |
1987年 | 17篇 |
1986年 | 29篇 |
1985年 | 27篇 |
1984年 | 36篇 |
1983年 | 33篇 |
1982年 | 28篇 |
1981年 | 30篇 |
1980年 | 27篇 |
1979年 | 22篇 |
1978年 | 27篇 |
1977年 | 16篇 |
1974年 | 14篇 |
1973年 | 14篇 |
排序方式: 共有3663条查询结果,搜索用时 0 毫秒
941.
Functional neuroimaging suggests that limbic regions of the medial frontal cortex may be abnormally active in individuals with depression. These regions, including the anterior cingulate cortex, are engaged in both action regulation, such as monitoring errors and conflict, and affect regulation, such as responding to pain. The authors examined whether clinically depressed subjects would show abnormal sensitivity of frontolimbic networks as they evaluated negative feedback. Depressed subjects and matched control subjects performed a video game in the laboratory as a 256-channel EEG was recorded. Speed of performance on each trial was graded with a feedback signal of A, C, or F. By 350 ms after the feedback signal, depressed subjects showed a larger medial frontal negativity for all feedback compared with control subjects with a particularly striking response to the F grade. This response was strongest for moderately depressed subjects and was attenuated for subjects who were more severely depressed. Localization analyses suggested that negative feedback engaged sources in the anterior cingulate and insular cortices. These results suggest that moderate depression may sensitize limbic networks to respond strongly to aversive events. 相似文献
942.
The authors examined the impact of caffeine on human memory and predictions of memory (i.e., metamemory). On Day 1, 83 college students drank a sweetened beverage containing either caffeine (4 mg/kg body weight) or a placebo before they studied 40 pairs of words. While the participants studied, they predicted their future memory performance for each word pair. On Day 2, the participants again received caffeine or a placebo before the memory test. The participants who drank the same beverage on both days (either caffeine or a placebo) recalled more word pairs than did those who drank different beverages (caffeine on 1 day and a placebo on the other day). In contrast, memory predictions were more accurate when the beverages did not match on both days. These data provide evidence for state-dependent memory when caffeine is used, but not for state-dependent metamemory. People's memory and their predictions of memory can be influenced in different ways if they drink caffeine before they study or take a test. 相似文献
943.
Migration can impact on a person's identity and this assault can require reworking or establishing aspects of the self. The study involved a cross sectional design, using both quantitative and qualitative methodologies to establish the impact of migration on women from the United Kingdom (UK) and Eire (N = 154) now living in Australia. A major aim was to determine whether the impact of multiple loss (loss of home, major attachment figure, family, community, culture, and social networks) can cause a grief reaction and threatened a person's identity, and, if so, what strategies might be used to buffer this impact and assist reinvention of the self. Bowlby's grieving process was used as a theoretical framework. Women who successfully reached the final stage were able to reinvent themselves using social strategies, whereas those less able used solitary strategies. Women, unable to reach the final stage of grieving, suffered psychological distress. The study has implications for future migrants. Migrants who use appropriate strategies to enable settlement and reinvention are also likely to achieve a sense of belonging to the new place. 相似文献
944.
945.
We explore the dimensions of the Parents as Partners principle, the widely touted, but somewhat elusive construct in the literature on treating children with serious mental illness, whose poorly defined boundaries, lack of empirical grounding, and overemphasis on instrumental dimensions attenuates its usefulness as a guide for practice and research. Four major barriers to the realization of this principle are outlined, all of which may impede actualizing partnership in practice and may also inhibit the early formation of a positive clinician/parent alliance, a neglected, though key dimension of true partnership practice. The alliance, which has a long clinical and research history in psychotherapy and behavioral research, and more recently, in a variety of community-based interventions, is a precursor to active client partnership with helpers and to treatment participation, as well as therapeutic in its own right. After reviewing relevant alliance research, we close with a beginning research agenda to incorporate the alliance as an integral component of future conceptualization and research about the Parents as Partners principle. 相似文献
946.
Jane Karp Karen L. Brown Margaret D. Sullivan Mary Jane Massie 《Journal of genetic counseling》1999,8(3):163-173
The goal of this pilot study was to test the usefulness of a six session psychoeducational support group for women at high genetic risk for breast cancer who were considering prophylactic mastectomy. The themes of the group sessions included overestimation of and anxiety about risk; desire for hard data; the emotional impact of watching a mother die of breast cancer; concerns about spouse reactions; self- and body image; the decision-making process; and confusion over whom to trust in decision making. Both the participants and the multidisciplinary leaders concluded that as a supplement to individual counseling, a support group is a beneficial and cost-effective treatment modality. Recommendations for the optimal format for such a group are described. 相似文献
947.
We tested listeners’ ability to identify brief excerpts from popular recordings. Listeners were required to match 200- or 100-msec excerpts with the song titles and artists. Performance was well above chance levels for 200-msec excerpts and poorer but still better than chance for 100-msec excerpts. Performance fell to chance levels when dynamic (time-varying) information was disrupted by playing the 100-msec excerpts backward and when high-frequency information was omitted from the 100-msec excerpts; performance was unaffected by the removal of low-frequency information. In sum, successful identification required the presence of dynamic, high-frequency spectral information. 相似文献
948.
Catherine M. Rodriguez 《Journal of Aging and Identity》1999,4(2):127-138
This essay examines the autobiography of Hester Lynch Piozzi and contextualizes her story within eighteenth-century ideologies of gender and aging. From a narrative understanding of identity, autobiographical writing serves as one of the many stories that constitute an individual's identity. This reading of Piozzi's account finds that it functions both as an act of reminiscing and as an effort to give meaning to life that was often misunderstood. Considering Piozzi as a woman who lived most of her life outside of the social and cultural expectations for a middle class female of her era, this essay suggests the importance of listening to and retelling the stories of others as well as our own. 相似文献
949.
950.
Kate Brittlebank Kathleen D. Morrison Christopher Key Chapple D. L. Johnson Fritz Blackwell Carl Olson Chenchuramaiah T. Bathala Gail Hinich Sutherland Gail Hinich Sutherland Ashley James Dawson Nancy Auer Falk Carl Olson Dan Cozort Karen Pechilis Prentiss Tessa Bartholomeusz Katharine Adeney D. L. Johnson Heidi Pauwels Paul Waldau Paul Waldau C. Mackenzie Brown David Kinsley John E. Cort Jonathan S. Walters Christopher Key Chapple Helene T. Russell Jeffrey J. Kripal Dermot Killingley Dorothy M. Figueira John S. Strong 《International Journal of Hindu Studies》1998,2(1):117-156