全文获取类型
收费全文 | 1198篇 |
免费 | 42篇 |
出版年
2022年 | 11篇 |
2021年 | 18篇 |
2020年 | 28篇 |
2019年 | 25篇 |
2018年 | 37篇 |
2017年 | 52篇 |
2016年 | 36篇 |
2015年 | 18篇 |
2014年 | 20篇 |
2013年 | 125篇 |
2012年 | 49篇 |
2011年 | 50篇 |
2010年 | 27篇 |
2009年 | 35篇 |
2008年 | 39篇 |
2007年 | 34篇 |
2006年 | 29篇 |
2005年 | 29篇 |
2004年 | 51篇 |
2003年 | 24篇 |
2002年 | 35篇 |
2001年 | 28篇 |
2000年 | 27篇 |
1999年 | 41篇 |
1998年 | 25篇 |
1997年 | 18篇 |
1996年 | 15篇 |
1995年 | 20篇 |
1994年 | 21篇 |
1993年 | 21篇 |
1992年 | 18篇 |
1991年 | 19篇 |
1990年 | 15篇 |
1989年 | 10篇 |
1988年 | 7篇 |
1987年 | 8篇 |
1986年 | 8篇 |
1985年 | 9篇 |
1984年 | 9篇 |
1980年 | 7篇 |
1978年 | 9篇 |
1977年 | 6篇 |
1975年 | 9篇 |
1974年 | 14篇 |
1973年 | 8篇 |
1972年 | 8篇 |
1970年 | 9篇 |
1968年 | 11篇 |
1967年 | 7篇 |
1966年 | 8篇 |
排序方式: 共有1240条查询结果,搜索用时 15 毫秒
51.
The aims of the present review are to apply a recent risk factor approach (H. C. Kraemer et al., 1997) to putative risk factors for eating disorders, to order these along a timeline, and to deduce general taxonomic questions. Putative risk factors were classified according to risk factor type, outcome (anorexia nervosa, bulimia nervosa, binge-eating disorder, full vs. partial syndromes), and additional factor characteristics (specificity, potency, need for replication). Few of the putative risk factors were reported to precede the onset of the disorder. Many factors were general risk factors; only few differentiated between the 3 eating disorder syndromes. Common risk factors from longitudinal and cross-sectional studies were gender, ethnicity, early childhood eating and gastrointestinal problems, elevated weight and shape concerns, negative self-evaluation, sexual abuse and other adverse experiences, and general psychiatric morbidity. Suggestions are made for the conceptualization of future risk factor studies. 相似文献
52.
Dovidio JF ten Vergert M Stewart TL Gaertner SL Johnson JD Esses VM Riek BM Pearson AR 《Personality & social psychology bulletin》2004,30(12):1537-1549
The present work investigated mechanisms by which Whites' prejudice toward Blacks can be reduced (Study 1) and explored how creating a common ingroup identity can reduce prejudice by promoting these processes (Study 2). In Study 1, White participants who viewed a videotape depicting examples of racial discrimination and who imagined the victim's feelings showed greater decreases in prejudice toward Blacks than did those in the objective and no instruction conditions. Among the potential mediating affective and cognitive variables examined, reductions in prejudice were mediated primarily by feelings associated with perceived injustice. In Study 2, an intervention designed to increase perceptions of a common group identity before viewing the videotape, reading that a terrorist threat was directed at all Americans versus directed just at White Americans, also reduced prejudice toward Blacks through increases in feelings of injustice. 相似文献
53.
This study explored the applicability of previous research (obtained with groups of college-educated women) about the subjective experience of aging in midlife to men and less-educated people. Two-hundred fifty-nine men and women who graduated from a public high school in 1955-1957 retrospectively assessed their feelings of identity certainty, confident power, generativity, and concern about aging for their 60s, 40s, and 20s. Participants reported higher levels of identity certainty, confident power, and concern about aging at each age, and a leveling off of generativity in their 60s. There were some gender and social class differences. Although men and women recalled the same trajectory of these feelings, men reported higher levels of identity certainty and confident power across age. Non-college-educated men recalled the highest levels of concern about aging across age. We discuss how these findings add to our understanding of the experience of aging in these domains. 相似文献
54.
The present study examined the influence of cultural background on the experience of loneliness. One hundred and ninety-four
Canadians and 209 participants from the Czech Republic formed the subject pool. Rather than compare the two populations and
disregard the within and between age differences, the cultural groups were divided into age subgroups. These were young adults
(18–30 years old), adults (31–59) and seniors (60–89). They answered a 30-item yes/no questionnaire. The questionnaire is
composed of five subscales, namely. Emotional Distress, Social Inadequacy and Alienation, Growth and Discovery, Interpersonal
Isolation, and Self-Alienation. Results indicated that overall, the cultural groups differed in their experiences of loneliness.
Further, when each age group was compared across the two cultures, it was evident that the age groups scored significantly
differently from its counterparts in the other culture. Scores of different age groups within cultures were also examined.
This study was supported by York University's Grant # 496055 相似文献
55.
A number of lines of study suggest that word meanings are not always fully exploited in comprehension. In two experiments,
we used a text-change paradigm to study depth of semantic processing during reading. Participants were instructed to detect
words that changed across two consecutive presentations of short texts. The results suggest that the full details of word
meanings are not always incorporated into the interpretation and that the degree of semantic detail in the representation
is a function of linguistic focus. The results provide evidence for the idea that representations are only good enough for
the purpose at hand (Ferreira, Bailey, & Ferraro, 2002). 相似文献
56.
Substantial evidence suggests that alterations in noradrenergic function contribute to the cognitive impairments of schizophrenia. Activation of post-junctional alpha 2a-adrenergic receptors in the prefrontal cortex by the alpha 2a-selective agonist guanfacine has demonstrated some preliminary benefit in subjects with schizophrenia treated with atypical antipsychotics. alpha 1-adrenergic receptor activity may be less important in mediating the cognitive impairments of schizophrenia. beta-adrenergic receptors may serve as another potential target for cognitive remediation in schizophrenia. However, the potential increase in memory consolidation in schizophrenia patients produced by beta-adrenergic agonists may be outweighed by the impairment in cognitive flexibility and executive functioning produced by beta-adrenergic agonists. Finally, norepinephrine reuptake inhibitors, such as atomoxetine, hold promise as potential cognitive enhancers in schizophrenia because of their ability to indirectly but selectively increase extracellular dopamine concentrations in the prefrontal cortex. 相似文献
57.
J. B. Miner and N. S. Raju (2004) contended that there are additional studies that compare the risk propensity of entrepreneurs and managers, which, when added to the data from W. H. Stewart and P. L. Roth (2001) and meta-analyzed, produce relationships between risk propensity and entrepreneurial status that are substantially weaker than previously believed. This conclusion was evaluated by identifying and examining methodological problems associated with their inclusion of effect sizes (i.e., ds) from studies with variables not relevant to research questions, dependent samples, extraneous variance in outcome variables, and confusion of constructs. When these methodological issues were addressed, a new meta-analysis indicated an overall conclusion consistent with that of Stewart and Roth, but the results varied according to instrumentation, particularly objective instrumentation (observed d = 0.31) versus the Miner Sentence Completion Scale-Form T (observed d = -0.35). 相似文献
58.
OBJECTIVES: To determine the extent to which transition planning and community service would predict lower levels of recidivism among mentally ill juvenile offenders. DESIGN: Review of legal, medical and social service records including examination of 3-month period following community release. PARTICIPANTS: Juvenile offenders incarcerated for 6 months or more (N = 44) transitioning to community. MEASURES: Child and Adolescent Functional Assessment Scale (CAFAS), sum of different documented pre- and post-release discharge planning contacts, documented community service contacts. OUTCOMES: Re-offense during the first year post-release. RESULTS: Documented community service contacts in the 3 months following discharge were rare for mental health (20.5%), substance abuse (38.6%), financial assistance (29.5%), and school placement (34.1%). The average number of different pre-release and post-release discharge planning contacts was also low, M(SD)=1.86(1.68) and M(SD)= 2.34(1.71) respectively. Post-release discharge planning and the receipt of financial assistance and mental health services were all associated with lower levels of reoffending. CONCLUSIONS: Community transition planning, including the coordination and provision of community services, is an essential component of community reintegration for juvenile offenders and is associated with lower rates of recidivism during the first year post-discharge. 相似文献
59.
Duration judgments in children with ADHD suggest deficient utilization of temporal information rather than general impairment in timing. 总被引:1,自引:0,他引:1
Clinicians, parents, and teachers alike have noted that individuals with ADHD often have difficulties with "time management," which has led some to suggest a primary deficit in time perception in ADHD. Previous studies have implicated the basal ganglia, cerebellum, and frontal lobes in time estimation and production, with each region purported to make different contributions to the processing and utilization of temporal information. Given the observed involvement of the frontal-subcortical networks in ADHD, we examined judgment of durations in children with ADHD (N = 27) and age- and gender-matched control subjects (N = 15). Two judgment tasks were administered: short duration (550 ms) and long duration (4 s). The two groups did not differ significantly in their judgments of short interval durations; however, subjects with ADHD performed more poorly when making judgments involving long intervals. The groups also did not differ on a judgment-of-pitch task, ruling out a generalized deficit in auditory discrimination. Selective impairment in making judgments involving long intervals is consistent with performance by patients with frontal lobe lesions and suggests that there is a deficiency in the utilization of temporal information in ADHD (possibly secondary to deficits in working memory and/or strategy utilization), rather than a problem involving a central timing mechanism. 相似文献
60.
Illness course separates patients with atypical depression into tricyclic responders and nonresponders as does perceptual asymmetry. The authors therefore investigated whether the course-of-illness parameters would define groups within atypical depression differing in brain laterality. Patients with atypical depression were assessed for illness course and brain laterality. Two patient groups were defined, 1 with onset prior to age 20 plus a very chronic course, and a 2nd group having later onset or less chronic illness. Patients reporting early onset of very chronic dysphoria showed significantly less right-ear (left-hemisphere) accuracy and also differed in characteristic perceptual asymmetry when compared to patients with later onset or less chronicity. Course of illness may usefully define more homogeneous depressive subgroups within atypical depression. 相似文献