全文获取类型
收费全文 | 5949篇 |
免费 | 100篇 |
国内免费 | 2篇 |
专业分类
6051篇 |
出版年
2023年 | 60篇 |
2022年 | 52篇 |
2021年 | 64篇 |
2020年 | 129篇 |
2019年 | 145篇 |
2018年 | 184篇 |
2017年 | 199篇 |
2016年 | 237篇 |
2015年 | 124篇 |
2014年 | 173篇 |
2013年 | 629篇 |
2012年 | 263篇 |
2011年 | 307篇 |
2010年 | 196篇 |
2009年 | 190篇 |
2008年 | 254篇 |
2007年 | 277篇 |
2006年 | 258篇 |
2005年 | 206篇 |
2004年 | 188篇 |
2003年 | 198篇 |
2002年 | 196篇 |
2001年 | 109篇 |
2000年 | 84篇 |
1999年 | 66篇 |
1998年 | 68篇 |
1997年 | 62篇 |
1996年 | 61篇 |
1995年 | 63篇 |
1994年 | 59篇 |
1993年 | 35篇 |
1992年 | 56篇 |
1991年 | 44篇 |
1990年 | 41篇 |
1989年 | 47篇 |
1988年 | 54篇 |
1987年 | 37篇 |
1986年 | 38篇 |
1985年 | 51篇 |
1984年 | 50篇 |
1983年 | 30篇 |
1982年 | 41篇 |
1981年 | 28篇 |
1980年 | 37篇 |
1979年 | 38篇 |
1978年 | 45篇 |
1977年 | 35篇 |
1976年 | 38篇 |
1974年 | 35篇 |
1973年 | 28篇 |
排序方式: 共有6051条查询结果,搜索用时 0 毫秒
101.
102.
The authors investigated the criterion and incremental validity of personality reports from psychiatric patients and knowledgeable informants in predicting patient substance use, social and risky behaviors, and psychological distress. Patient and informant reports of patient personality and behavior were collected from an adult psychiatric sample (N = 94). Hierarchical regressions indicated that patient reports of personality accounted for significant variance in both concurrent (17%-42%) and future behavior assessed 1 year later (17%-40%). Informant reports contributed significantly to the prediction of several behaviors and most strongly to social behaviors. Behaviors were predicted equally well by self-reports and informant reports in prospective as in concurrent regressions. Thus, both patient and informant reports of personality contribute importantly to prediction of behavior, and predictive ability is stable across time. 相似文献
103.
The purpose of this study was to investigate the effects of aging and the role of augmented visual information in the acquisition of a new bimanual coordination pattern, namely a 90° relative phase pattern. In a pilot study, younger and older adults received augmented visual feedback in the form of a real-time orthogonal display of both limb movements after every fifth trial. Younger adults acquired this task over three days of practice and retained the task well over periods of one week and one month of no practice while the older adults showed no improvement at all on the task. It was hypothesized that the amount of augmented information was not sufficient for the older adults to overcome the strong tendency to perform natural, intrinsically stable coordination patterns, which consequently prevented them from learning the task. The present study evaluated the age-related role of augmented visual feedback for learning the new pattern. Participants were randomly assigned within age groups to receive either concurrent or terminal visual feedback after every trial in acquisition. In contrast to the pilot study, all of the older adults learned the pattern, although not to the same level as the younger adults. Both younger and older adults benefitted from concurrent visual feedback, but the older adults gained more from the concurrent feedback than the younger adults, relative to terminal feedback conditions. The results suggest that when learning bimanual coordination patterns, older adults are more sensitive to the structure of the practice conditions, particularly the availability of concurrent visual information. This greater sensitivity to the learning environment may reflect a diminished capacity for inhibitory control and a decreased ability to focus attention on the salient aspects of learning the task. 相似文献
104.
Past studies have not assessed the prevalence of emotional disturbances in Holocaust survivors seeking medical treatment in a family practice environment. The present study examined the prevalence of lifetime (the presence of symptomatology at any time) and current posttraumatic stress disorder (PTSD) symptoms, general anxiety, and depression in Holocaust survivors seeking medical treatment in a primary care setting. 20 of the 27 Holocaust survivors in our sample received a current diagnosis of PTSD and reported significant symptoms of depression and general anxiety. Although 74% of the survivors were currently diagnosed with PTSD, participants in this study had reported an overall decline in reexperiencing, hyperarousal, and overall PTSD symptoms but exhibited increased avoidance and numbing symptoms throughout the lifespan. These preliminary results suggest that removing avoidance as a defense mechanism during the course of psychotherapy may leave these survivors without an adequate way for coping with their trauma, subsequently increasing their vulnerability to psychopathology. Implications for psychological interventions are provided. 相似文献
105.
During summer, female meadow voles (Microtus pennsylvanicus) maintain territories and males do not engage in paternal care. As day length shortens, territories dissolve and males nest with females and young. Because paternal behavior has never been studied in free-living meadow voles during colder months or in the laboratory under short photoperiods, the authors examined whether males housed in short day (SD) lengths exhibited more frequent or better quality paternal behavior than males housed in long day (LD) lengths. Sexually and parentally inexperienced (naive) SD males exhibited proportionally more and qualitatively better paternal care than naive LD males. SD males were more responsive than LD males to classic social cues associated with prepartum aggression inhibition and paternal onset. SD sires also displayed qualitatively better paternal behavior than LD sires. These data suggest that meadow vole paternal state is regulated by specific social and environmental cues that may contain reliable information about ecological conditions that favor paternal care. 相似文献
106.
Kissell JL 《Theoretical medicine and bioethics》2001,22(1):1-4
Theoretical Medicine and Bioethics - 相似文献
107.
108.
Isaac M. Lipkus Jeffrey D. Green John R. Feaganes Constantine Sedikides 《Journal of applied social psychology》2001,31(1):113-133
Growing evidence shows that attitudes can exist on a bivariate rather than a bipolar plane. This conceptualization provides a more dynamic approach to studying how attitudinal ambivalence (i. e., evaluating an attitude object as both positive and negative) affects smoking‐related behaviors. Based on a sample of 157 college smokers, we obtained preliminary validational support for a smoking‐specific felt attitudinal ambivalence scale. Felt attitudinal ambivalence correlated positively with potential for ambivalence, negative attitudes, and negative as well as positive outcome expectancies related to smoking. Smokers who felt more ambivalent reported a greater desire to quit and were more likely to be contemplators, as defined by the transtheoretical model of behavioral change. In multivariate analyses, felt ambivalence toward smoking predicted desire to quit after controlling for positive and negative attitudes and negative smoking consequences. These results provide promising support for the smoking‐specific felt‐ambivalence scale, and suggest that attitudinal ambivalence should be investigated further as a motivational mechanism to affect smoking cessation. 相似文献
109.
Stacy Lee Burns 《Human Studies》2012,35(2):175-192
This article discusses some empirical materials from a collaborative study of ??lecturing??s work?? which the author conducted with Harold Garfinkel. The paper shows Garfinkel at work by presenting a history of the collaboration and discussing what we found. The article also considers some larger implications of our research for understanding how ethnomethodological studies can recover and discover the material regularities of everyday life as they are practiced in distinct settings. The paper reports on a program of ethnomethodological inquiry for discovering in situ what the produced orderliness of any setting??s endogenous tasks, competent courses of action and organizational objects could possibly be. The promise is that just what is identifying of social order, action and meaning is to be found massively, as the routine grounds of everyday activities, and in every case, as something worldly and embodied. 相似文献
110.
The contribution of genetic factors to the memory is widely acknowledged. Research suggests that these factors include genes involved in the dopaminergic pathway, as well as the genes for brain-derived neurotrophic factor (BDNF) and methylenetetrahydrofolate reductase (MTHFR). The activity of the products of these genes is affected by single nucleotide polymorphisms (SNPs) within the genes. This study investigates the association between memory and SNPs in genes involved in the dopaminergic pathway, as well as in the BDNF and MTHFR genes, in a sample of healthy individuals. The sample includes 134 Taiwanese undergraduate volunteers of similar cognitive ability. The Chinese versions of the Wechsler Memory Scale (WMS-III) and Wechsler Adult Intelligence Scale (WAIS-III) were employed. Our findings indicate that the BDNF Met66Val polymorphism and dopamine receptor D3 (DRD3) Ser9Gly polymorphism are associated significantly with long-term auditory memory. Further analysis detects no significant associations in the other polymorphisms and indices. Future replicated studies with larger sample sizes, and studies that consider different ethnic groups, are encouraged. 相似文献