全文获取类型
收费全文 | 1162篇 |
免费 | 11篇 |
专业分类
1173篇 |
出版年
2023年 | 8篇 |
2021年 | 8篇 |
2020年 | 27篇 |
2019年 | 16篇 |
2018年 | 23篇 |
2017年 | 29篇 |
2016年 | 30篇 |
2015年 | 26篇 |
2014年 | 27篇 |
2013年 | 121篇 |
2012年 | 34篇 |
2011年 | 47篇 |
2010年 | 31篇 |
2009年 | 36篇 |
2008年 | 36篇 |
2007年 | 46篇 |
2006年 | 36篇 |
2005年 | 40篇 |
2004年 | 53篇 |
2003年 | 42篇 |
2002年 | 28篇 |
2001年 | 23篇 |
2000年 | 21篇 |
1999年 | 19篇 |
1998年 | 20篇 |
1997年 | 20篇 |
1996年 | 12篇 |
1995年 | 18篇 |
1994年 | 19篇 |
1993年 | 9篇 |
1992年 | 16篇 |
1991年 | 14篇 |
1990年 | 9篇 |
1988年 | 12篇 |
1987年 | 11篇 |
1986年 | 12篇 |
1985年 | 11篇 |
1984年 | 10篇 |
1983年 | 12篇 |
1982年 | 12篇 |
1981年 | 12篇 |
1980年 | 8篇 |
1979年 | 13篇 |
1978年 | 12篇 |
1976年 | 13篇 |
1974年 | 12篇 |
1972年 | 8篇 |
1969年 | 9篇 |
1968年 | 15篇 |
1966年 | 7篇 |
排序方式: 共有1173条查询结果,搜索用时 15 毫秒
91.
Previous studies have suggested that the process of transmigration has detrimental effects on the body image of migrants relative to women in the country of origin. In the present work, we examined the body image of Polish migrants in Britain (n = 153), Polish women in Poland (n = 153), and a comparison group of British White women (n = 110). Participants completed a measure of actual-ideal weight discrepancy and the Body Appreciation Scale (BAS). Contrary to hypotheses, our results showed that Polish women in Poland had significantly higher weight discrepancy than their counterparts in Britain. Further analyses showed that the BAS reduced to two dimensions among Polish participants, with Polish participants in Poland having significantly lower body appreciation than Polish migrants. We suggest that the sociocultural changes that have taken place in Eastern Europe may place women in that region at relatively high risk for developing negative body image. 相似文献
92.
Emotion influences memory in many ways. For example, when a mood-dependent processing shift is operative, happy moods promote
global processing and sad moods direct attention to local features of complex visual stimuli. We hypothesized that an emotional
context associated with to-be-learned facial stimuli could preferentially promote global or local processing. At learning,
faces with neutral expressions were paired with a narrative providing either a happy or a sad context. At test, faces were
presented in an upright or inverted orientation, emphasizing configural or analytical processing, respectively. A recognition
advantage was found for upright faces learned in happy contexts relative to those in sad contexts, whereas recognition was
better for inverted faces learned in sad contexts than for those in happy contexts. We thus infer that a positive emotional
context prompted more effective storage of holistic, configural, or global facial information, whereas a negative emotional
context prompted relatively more effective storage of local or feature-based facial information 相似文献
93.
The present work investigated the effects of caffeine (0 mg, 100 mg, 200 mg, 400 mg) on a flanker task designed to test Posner’s three visual attention network functions: alerting, orienting, and executive control [Posner, M. I. (2004). Cognitive neuroscience of attention. New York, NY: Guilford Press]. In a placebo-controlled, double-blind study using a repeated-measures design, we found that the effects of caffeine on visual attention vary as a function of dose and the attention network under examination. Caffeine improved alerting and executive control function in a dose–response manner, asymptoting at 200 mg; this effect is congruent with caffeine’s adenosine-mediated effects on dopamine-rich areas of brain, and the involvement of these areas in alerting and the executive control of visual attention. Higher doses of caffeine also led to a marginally less efficient allocation of visual attention towards cued regions during task performance (i.e., orienting). Taken together, results of this study demonstrate that caffeine has differential effects on visual attention networks as a function of dose, and such effects have implications for hypothesized interactions of caffeine, adenosine and dopamine in brain areas mediating visual attention. 相似文献
94.
Alicia F. Lieberman 《Infant mental health journal》2004,25(4):336-351
This article describes the interface between the fields of attachment and child trauma, their respective contributions to an understanding of infant mental health disturbances, and the clinical applications of an integration between attachment theory and trauma‐informed treatment and research. The organizing theme is that a dual attachment and trauma lens must be used in the assessment and treatment of infants and toddlers with mental health and relationship problems. The quality of attachment is an important factor in children's capacity to process and resolve traumatic experiences. At the same time, traumatic events often have a damaging effect on the quality of existing attachments by introducing unmanageable stress in the infant–parent relationship. It is argued that trauma in the first years of life needs to be assessed and treated in the context of the child's primary attachments. Reciprocally, the etiology of attachment disturbances should include an assessment of possible exposure to trauma in the child and in the parents. Current conceptualizations of attachment and trauma are reviewed from this perspective, and a clinical illustration is presented to highlight how a traumatic stressor can trigger behaviors reminiscent of disorganized attachment. 相似文献
95.
Children who experienced a highly stressful natural disaster, Hurricane Andrew, were interviewed within a few months of the event, when they were 3-4 years old, and again 6 years later, when they were 9-10 years old. Children were grouped into low, moderate, or high stress groups depending on the severity of the experienced storm. All children were able to recall this event in vivid detail 6 years later. In fact, children reported over twice as many propositions at the second interview as at the first. At the initial interview, children in the high stress group reported less information than children in the moderate stress group, but 6 years later, children in all three stress groups reported similar amounts of information. However children in the high stress group needed more questions and prompts than children in the other stress groups. Yet children in the high stress group also reported more consistent information between the two interviews, especially about the storm, than children in the other stress groups. Implications for children's developing memory of stressful events are discussed. 相似文献
96.
97.
This paper describes an attempt at forming and conducting a unique single-gender psychotherapy group with severely disturbed female adolescents on a long-term, psychotherapeutically oriented co-ed inpatient unit. The focus of this group was assisting the female patients in negotiating the tasks and conflicts specific to their gender and developmental stage. The therapeutic approach and the role of female coleaders are described, emphasizing particular modifications made to meet the needs of this group. Clinical examples are offered to high-light salient group themes of identity formation and separation and individuation. Finally, group therapeutic factors specifically enhanced by single gender membership are discussed and observations regarding the group/milieu interface are explored. 相似文献
98.
Fixed-interval responding under second-order schedules of food presentation or cocaine injection.
下载免费PDF全文

Squirrel monkeys operated a key under second-order schedules in which every tenth completion of a 5-minute fixed interval resulted in either presentation of food or intravenous injection of cocaine. When a 2-second light was presented at the completion of the component fixed-interval schedules, positively accelerated responding developed and was maintained in each component. Over a tenfold range of doses of cocaine(30 to 300 microgram/kg/injection) and amounts of food (0.75 to 7.5 g/presentation); the second-order schedule of cocaine injection maintained higher average rates of responding than the second-order schedule of food presentation. Substituting saline for cocaine or eliminating food presentation decreased average rates of responding. When no stimulus change occurred at the completion of the first nine component fixed-interval schedules, but the 2-second light and food presentation or cocaine injection still occurred after the tenth component, only low and relatively constant rates of responding were maintained in each component. Patterns of responding characteristic of 5-minute fixed-interval schedules were maintained by the 2-second light paired with either cocaine injection or food presentation, though the maximum frequency of cocaine injection or food presentation was less than once per 50 minutes. 相似文献
99.
An experiment was conducted to assess the effects of actual racial membership versus similarity of beliefs about racial issues on interpersonal evaluations. Prejudiced and unprejudiced White male students observed a videotaped interaction of two Black and two White male actors discussing racial issues and then evaluated the actors on several scales. One White and one Black actor took a conservative stand on racial issues, and the other White and Black pair of actors took a liberal position. Results from the ratings showed strong belief prejudice effects. Prejudiced subjects were attracted to conservative actors while unprejudiced subjects were attracted to liberal actors. Additionally, there were two kinds of race effects. Prejudiced subjects preferred White to Black actors, but unprejudiced subjects showed a reverse bias, preferring Black to White actors. A tentative explanation for this unusual finding was proposed. 相似文献
100.
The purpose of this study was to determine, within a community sample of 115 Mexican Americans, the association of relationship variables to participants' HIV risk perception, use of condoms, and HIV-related communication with a relationship partner. Hierarchical multiple regression analyses with the total sample and within each gender separately revealed that intimacy and commitment were related to HIV risk perception, condom use, and HIV-related communication even after effects of age, gender, acculturation, marital status, and length of relationship were controlled. The pattern of significant correlates differs, however, in the total, women-only, and men-only samples. Results suggest that intimacy and commitment are important elements of the close relationship context that should be considered in HIV risk reduction efforts among Mexican Americans. 相似文献