首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   916篇
  免费   48篇
  2024年   1篇
  2023年   6篇
  2022年   10篇
  2021年   10篇
  2020年   10篇
  2019年   32篇
  2018年   43篇
  2017年   36篇
  2016年   33篇
  2015年   34篇
  2014年   48篇
  2013年   100篇
  2012年   52篇
  2011年   56篇
  2010年   36篇
  2009年   39篇
  2008年   55篇
  2007年   47篇
  2006年   43篇
  2005年   38篇
  2004年   31篇
  2003年   32篇
  2002年   24篇
  2001年   25篇
  2000年   18篇
  1999年   10篇
  1998年   6篇
  1997年   12篇
  1996年   8篇
  1995年   7篇
  1994年   7篇
  1993年   11篇
  1992年   9篇
  1991年   11篇
  1990年   5篇
  1989年   1篇
  1988年   2篇
  1987年   2篇
  1986年   2篇
  1982年   1篇
  1981年   1篇
  1980年   1篇
  1978年   1篇
  1975年   1篇
  1965年   1篇
  1960年   2篇
  1959年   1篇
  1957年   1篇
  1951年   2篇
排序方式: 共有964条查询结果,搜索用时 31 毫秒
221.
To examine whether anticipatory attention or expectancy is a cognitive process that is automatic or requires conscious control, we employed a paired-stimulus event-related potential (ERP) paradigm during the transition to sleep. The slow negative ERP wave observed between two successive stimuli, the Contingent Negative Variation (CNV), reflects attention and expectancy to the second stimulus. Thirteen good sleepers were instructed to respond to the second stimulus in a pair during waking sessions. In a non-response paradigm modified for sleep, participants then fell asleep while tones played. As expected, N1 decreased and P2 increased in amplitude systematically with the loss of consciousness at sleep onset; the CNV was increasingly more positive. Sleep onset latency was correlated with the amplitude of the CNV. The systematic attenuation of the CNV waveform at sleep onset and its absence in sleep indicates that anticipatory attention requires endogenous conscious control.  相似文献   
222.
Lesbian, gay, and bisexual individuals who are also racial/ethnic minorities (LGBT-POC) are a multiply marginalized population subject to microaggressions associated with both racism and heterosexism. To date, research on this population has been hampered by the lack of a measurement tool to assess the unique experiences associated with the intersection of these oppressions. To address this gap in the literature, we conducted a three-phase, mixed method empirical study to assess microaggressions among LGBT-POC. The LGBT People of Color Microaggressions Scale is an 18-item self-report scale assessing the unique types of microaggressions experienced by ethnic minority LGBT adults. The measure includes three subscales: (a) Racism in LGBT communities, (b) Heterosexism in Racial/Ethnic Minority Communities, and (c) Racism in Dating and Close Relationships, that are theoretically consistent with prior literature on racial/ethnic minority LGBTs and have strong psychometric properties including internal consistency and construct validity in terms of correlations with measures of psychological distress and LGBT-identity variables. Men scored higher on the LGBT-PCMS than women, lesbians and gay men scored higher than bisexual women and men, and Asian Americans scored higher than African Americans and Latina/os.  相似文献   
223.
The mechanisms underlying tracking and capture of moving objects in non-human animals are poorly understood. This set of experiments sought to further explore aspects of anticipatory tracking in pigeons and to conduct comparisons with human participants. In Experiment 1a, pigeons were presented with two types of varying velocities (fast-slow-fast or slow-fast-slow) in separate phases. They were readily able to track and anticipate both of these motion types. To examine the effects of predictability on anticipatory tracking, Experiment 1b presented the pigeons with the same two varying velocities randomly intermixed within a session. This resulted in reduced capture success, later capture, and errors that no longer anticipated ahead of the motion, suggesting that the anticipatory mechanism had been disrupted. This implies that the mechanisms involved in pigeon tracking are different from the predictive extrapolation mechanism proposed in humans. Experiment 2 tested this by presenting adult humans with a tracking task that was similar to tasks previously received by the pigeons. The capture behavior of humans was similar to the pigeons, but the errors revealed different processes underlying their tracking behavior.  相似文献   
224.
Two patients with pure alexia were studied with tachistoscopically presented stimuli to examine factors influencing their ability to distinguish words from nonwords and to derive semantic information at exposures too brief for explicit letter identification. Both patients had profound right hemianopia and computerized tomography (CT) evidence of splenial destruction. Both patients were successful in making word/nonword decisions for high-frequency, but not low-frequency, words. They could judge semantic class membership reliably for such common categories as animals and vegetables, but not for arbitrarily selected categories, such as office-related items. Judgments about the gender of people's names and place versus person name distinctions were made with high reliability. Results are interpreted as evidence for limited word recognition and semantic-processing capacity in the right hemisphere.  相似文献   
225.
The concordance between parent reports of children's mental health services and medical and administrative service records were assessed in a field test of the Services Assessment for Children and Adolescents (SACA) interview instrument. Service use reports from primary caregivers, usually mothers, for their child's emotional or behavioral problems were compared against inpatient, outpatient, and school records in St. Louis, one of the pilot sites for the Multi-Site Study of Service Use, Need, Outcomes and Costs in Child and Adolescent Populations (UNOCCAP). A global any use service variable, comprised of inpatient, outpatient, and school reports, yielded an overall service use concordance kappa of .76 between parent reports and records. Parent reports of inpatient hospitalization services using the SACA yielded the highest agreement with medical records, with kappa statistics of 1.00 for use of any inpatient hospital care and for medication use. Parent reports of specific inpatient services concurred with medical records more moderately, yielding kappas from .50 to .66. Reports of any outpatient mental health services yielded variable rates of agreement, with kappas ranging from .67 for any use of outpatient care, to .66 for medication use, to negligible kappas for specific treatments. Parent reports of school services were weakly related to records for most services, except for moderate agreement (.48) on placement in special classrooms for emotional or behavioral problems. Family burden or impact discriminated more powerfully than other variables between respondents who concurred with records and those who did not.  相似文献   
226.
In Skinner's (1957) conceptual analysis, the process of self-editing is integral to the dynamic complexities of multiply determined verbal behavior, but the analysis has generated little in the way of an experimental analysis. The majority of scientific work on self-editing has taken place within linguistics and cognitive psycholinguistics. Here we compare and contrast behavioral and cognitive psycholinguistic approaches to self-editing, highlighting points of contact that can be identified despite fundamental differences in theoretical styles. We conclude that the two approaches are not mutually exclusive on all dimensions, and suggest that a consideration of cognitive psycholinguistic research may help to spur an experimental analysis of self-editing from a behavioral perspective.  相似文献   
227.
The well-known family of low-density lipoprotein receptors represents a collection of ancient membrane receptors that have been remarkably conserved throughout evolution. These multifunctional receptors, known to regulate cholesterol transport, are becoming increasingly interesting to the neuroscience community due to their ability to transduce a diversity of extracellular signals across the membrane in the adult CNS. Their roles in modulating synaptic plasticity and necessity in hippocampus-specific learning and memory have recently come to light. In addition, genetic, biochemical and behavioral studies have implicated these signaling systems in a number of human neurodegenerative and neuropsychiatric disorders involving loss of cognitive ability, such as Alzheimer's disease, schizophrenia and autism. This review describes the known functions of these receptors and discusses their potential role in processes of synaptic regulation and memory formation.  相似文献   
228.
Hoppes K 《CNS spectrums》2006,11(11):829-851
This article reviews the theory, clinical application, and empirical findings on mindfulness-based cognitive therapy (MBCT) for mental health and addictive disorders. Expanding upon the research demonstrating the efficacy of cognitive-behavioral therapy (CBT) for addiction, this article develops and explores the rationale for combining mindfulness-based interventions with evidence-based CBTs in treating addictive disorders, with an emphasis on substance use disorders with co-occurring mood disorders. This article proposes that deficits in affect--regulation related to the behavioral and emotional effects of neurobiological changes that occur with long-term substance abuse--pose a unique set of challenges in early recovery. Prolonged use of addictive substances impairs the brain pathways that mediate certain affect regulation functions. These functions involve attention and inhibitory control, the saliency of and response to addictive versus natural reward stimuli, and the ability to detach or maintain perspective in response to strong emotional states. In treating this affective dysregulation, which can contribute to the vulnerability to relapse in the early stages of recovery, the affect-regulation-specific focus of MBCT adds a valuable element to augment CBT for addiction. Summarizing magnetic resonance imaging and positron emission tomography findings on the effects of MBCT and the neurobiology of drug addiction, this article outlines directions for further research on potential benefits of MBCT for the recovering individual. Finally, this article describes a structured protocol, developed at the Mount Sinai School of Medicine in New York City, which combines CBT with mindfulness-based intervention, for the treatment of affect-regulation issues specific to co-occurring addictive and mood disorders.  相似文献   
229.
Research supports the construct validity of the Relationship Profile Test (RPT; Bornstein & Languirand, 2003), a 30-item, self-report measure of destructive overdependence (DO), dysfunctional detachment (DD), and healthy dependency. In this investigation, we assessed the relationships of gender, gender role, and gender role stereotype ratings to RPT subscale scores. In Study 1, we replicated earlier patterns of gender differences in RPT scores, assessed cross-sample consistency in gender difference effect sizes, and provided preliminary nonclinical norms for the RPT subscales. Study 2 showed that--as expected--DO items are perceived as stereotypically feminine, whereas DD items are perceived as stereotypically masculine. In Study 3, we examined the relationships of RPT subscale scores to masculinity, femininity, and androgyny scores. We discuss the theoretical, empirical, and clinical implications of these findings.  相似文献   
230.
The primary focus of this study was to investigate the roles of spirituality and religiosity in self-reported physical health, and to determine whether there is an association between an individuals spirituality and cardiovascular responses to two stressors. Fifty-two females participated in both a betrayal interview and a structured interview, during which blood pressure and heart rate were monitored. Spirituality, as assessed by the Spiritual Well-being Scale, was associated with perceived stress, subjective well-being, and medication use. The Existential Well-being subscale predicted fewer physical health symptoms and was associated with lower mean heart rate and decreased heart rate reactivity. The Religious Well-being subscale was associated with reduced systolic blood pressure reactivity in response to the structured interview. These findings suggest that spirituality may have a salutary effect on health, even in a fairly young sample. While previous studies have predominantly reported that religion, as well as spirituality, have a health protective effect, this study did not find strong support for that conclusion. Religiosity in this age group may still be undergoing developmental maturity, which may explain the lack of relationships to health.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号