全文获取类型
收费全文 | 1736篇 |
免费 | 41篇 |
国内免费 | 2篇 |
专业分类
1779篇 |
出版年
2020年 | 13篇 |
2019年 | 21篇 |
2018年 | 27篇 |
2017年 | 22篇 |
2016年 | 33篇 |
2015年 | 19篇 |
2014年 | 22篇 |
2013年 | 162篇 |
2012年 | 65篇 |
2011年 | 63篇 |
2010年 | 39篇 |
2009年 | 26篇 |
2008年 | 41篇 |
2007年 | 64篇 |
2006年 | 51篇 |
2005年 | 51篇 |
2004年 | 68篇 |
2003年 | 53篇 |
2002年 | 73篇 |
2001年 | 42篇 |
2000年 | 51篇 |
1999年 | 30篇 |
1998年 | 58篇 |
1997年 | 37篇 |
1996年 | 19篇 |
1995年 | 28篇 |
1994年 | 25篇 |
1993年 | 26篇 |
1992年 | 40篇 |
1991年 | 32篇 |
1990年 | 20篇 |
1989年 | 24篇 |
1988年 | 23篇 |
1987年 | 20篇 |
1986年 | 25篇 |
1985年 | 26篇 |
1984年 | 19篇 |
1983年 | 16篇 |
1982年 | 31篇 |
1981年 | 27篇 |
1980年 | 25篇 |
1979年 | 16篇 |
1978年 | 22篇 |
1977年 | 14篇 |
1976年 | 13篇 |
1975年 | 19篇 |
1974年 | 27篇 |
1972年 | 13篇 |
1969年 | 13篇 |
1968年 | 11篇 |
排序方式: 共有1779条查询结果,搜索用时 0 毫秒
971.
Participants estimated the perceptual center of mass between two horizontally oriented black dots varying in size and distance. Experiment 1 showed that estimates, measured as distance from the larger dot's center, decreased with an increase in size ratio between the dots and a decrease in the distance between them, as predicted by the physical center-of-mass equation. The results were replicated and extended in further experiments with different ratios and distances. In all experiments, the true center was consistently overestimated, either because the stimuli were perceived in a low dimensionality or because of a hesitancy to place estimates near the larger dot's edge. In Experiment 4, the center was deliberately placed near this edge for one- and two-dimensional solutions. Participants still overestimated, indicating an "edge effect" as responsible. 相似文献
972.
When adults are asked to report and date personal memories of their pasts, they show childhood amnesia, that is, diminished recall of experiences over the childhood years. This way of demonstrating the phenomenon was supplemented in the present study with a more direct approach: Participants reported events of early childhood that they knew they had experienced (because of family stories, photographs, etc.) but did not actually remember. The resulting cumulative relative frequency distributions produced by the two methods were substantially different, with the median age of remembered events being 6.07 years and of known events, 3.20 years. We suggest that the mean of these two ages, 4.64 years, gives a good indication of when childhood amnesia is eclipsed by personal memories in adults' recall of their personal pasts. 相似文献
973.
974.
Paulhus DL Harms PD Bruce MN Lysy DC 《Journal of personality and social psychology》2003,84(4):890-904
Over-claiming is a concrete operalization of self-enhancement based on respondents' ratings of their knowledge of various persons, events, products, and so on. Because 20% of the items are nonexistent, responses can be analyzed with signal detection formulas to index both response bias (over-claiming) and accuracy (knowledge). Study 1 demonstrated convergence of over-claiming with alternative measures of self-enhancement but independence from cognitive ability. In Studies 2-3, the validity of the over-claiming index held even when respondents were (a) warned about the foils or (b) asked to fake good. Study 3 also showed the utility of the over-claiming index for diagnosing faking. In Study 4, the over-claiming technique was applied to the debate over the adaptive value of positive illusions. 相似文献
975.
The State-Trait Anger Expression Inventory administered to prison inmates has supported the factor structure of the three anger expression scales although this structure has not been verified with Australian participants. Data collected from 397 Western Australian male prisoners produced a factor structure consistent with the scale structure outlined in the 1991 manual. Scale means and standard deviations were similar to those reported for U.S. and Canadian prisoners. It is therefore appropriate to use the standard scoring procedures with Australian male prisoners. 相似文献
976.
We examined whether prior knowledge of a person affects the visual processes involved in learning a face. In two experiments, subjects were taught to associate human faces with characters they knew (from the TV show The Simpsons) or characters they did not (novel names). In each experiment, knowledge of the character predicted performance in a recognition memory test, relying only on old/new confidence ratings. In experiment 1, we established the technique and showed that there is a face-learning advantage for known people, even when face items are counterbalanced for familiarity across the experiment. In experiment 2 we replicated the effect in a setting which discouraged subjects from attending more to known than unknown people, and eliminated any visual association between face stimuli and a character from The Simpsons. We conclude that prior knowledge about a person can enhance learning of a new face. 相似文献
977.
The research reported in this article focuses on processes that contribute to the repetition effect in 2-alternative forced-choice tasks and on how these processes change with age. An analytical approach is presented that allows researchers to discriminate between 2 components of performance. The results of Experiment 1 show that differences in the relative contributions of these 2 processes can produce differences in repetition effects between younger and older adults. Furthermore, as in the negative priming domain, increasing the contribution of 1 of these 2 components can eliminate this age difference. Together, the results argue against the practice of attributing age differences in repetition effects to deficits in any single cognitive process. 相似文献
978.
Predicting unit performance by assessing transformational and transactional leadership 总被引:10,自引:0,他引:10
How do leadership ratings collected from units operating under stable conditions predict subsequent performance of those units operating under high stress and uncertainty? To examine this question, the authors calculated the predictive relationships for the transformational and transactional leadership of 72 light infantry rifle platoon leaders for ratings of unit potency, cohesion, and performance for U.S. Army platoons participating in combat simulation exercises. Both transformational and transactional contingent reward leadership ratings of platoon leaders and sergeants positively predicted unit performance. The relationship of platoon leadership to performance was partially mediated through the unit's level of potency and cohesion. Implications, limitations, and future directions for leadership research are discussed. 相似文献
979.
Caligor E Hamilton M Schneier H Donovan J Luber B Roose S 《Journal of the American Psychoanalytic Association》2003,51(1):201-220
All twenty-eight respondents to a recent poll of the thirty institutes affiliated with the American Psychoanalytic Association reported that they now accept cases converted from psychotherapy to psychoanalysis as control cases. This study was designed to compare converted cases to clinic cases systematically with respect to patient characteristics, treatment, and the educational experience of the treating candidate. The study followed twenty-four candidates entering analytic training between 1992 and 1995, who treated thirty-four clinic cases and forty-three converted cases between February 1993 and July 2000. Clinic and converted patients were comparable with regard to demographics, prior treatment histories, structural diagnoses, and Axis I diagnoses. In addition, the two groups of cases were indistinguishable with respect to the rate at which candidates received credit toward graduation requirements. Candidates treating converted cases earned approximately dollars 7,600 per patient per year, compared to candidates treating clinic cases, who earned nothing. Eighty-four percent of converted patients diagnosed with a mood disorder by the treating candidate were on medication, in contrast to only 20% of clinic patients with the same diagnosis. Similar differences were seen in the case of anxiety disorders. Given the prevalence of affective and anxiety disorders in control cases and the availability of a variety of medications and psychotherapies with documented efficacy in treating these disorders, candidates should be trained to discuss treatment options with patients who present with Axis I disorders. 相似文献
980.
The stability of a child's early life has profound effects on physical and mental health, and unstable parent-child relationships, as well as abuse, can lead to behavioral disorders and increased mortality and morbidity from a wide variety of common diseases later in life. One common consequence, namely, depressive illness, is associated with chemical imbalances in the brain and hormonal dysregulation, constituting a form of allostatic load that alters interpretations of stimuli and influences, behavioral, and hormonal responses to potentially stressful situations. The brain not only encodes information and controls the behavioral responses but it is also changed structurally by those experiences. Structural changes in the hippocampus and amygdala, which are important brain structures for cognition and emotion, are representative of what may be occurring throughout the brain as a result of allostatic load resulting from the chronic stress of a disorder such as depression. Such structural changes include dendritic debranching and hypertrophy, cell proliferation, and synaptic remodeling; they are produced by the combined overactivity of stress hormones and endogenous neurotransmitters. These mediators are normally involved in adaptation, but can also promote damage when they are dysregulated and over-active. They are very likely to be strongly biased by early life experiences. The findings from animal models thus provide a basis for understanding potential mechanisms of environmental and developmental determinants of individual differences in human stress reactivity, as well as anxiety, depression, and a host of related systemic disorders. There is an increasing amount of translational research that is beginning to tie the basic research to clinical outcomes of individuals exposed to abusive or inconsistent care-giving in early life. A major goal of studies on this important topic is to define times in development and strategies for intervening to prevent or reverse the effects of adverse early life experiences. Although prevention is clearly the preferable route, some degree of reversal of psychopathology and pathophysiology caused by early life adversity appears to be an achievable goal. 相似文献