全文获取类型
收费全文 | 1293篇 |
免费 | 307篇 |
国内免费 | 108篇 |
专业分类
1708篇 |
出版年
2024年 | 9篇 |
2023年 | 48篇 |
2022年 | 31篇 |
2021年 | 52篇 |
2020年 | 89篇 |
2019年 | 78篇 |
2018年 | 80篇 |
2017年 | 71篇 |
2016年 | 61篇 |
2015年 | 41篇 |
2014年 | 55篇 |
2013年 | 190篇 |
2012年 | 31篇 |
2011年 | 52篇 |
2010年 | 32篇 |
2009年 | 41篇 |
2008年 | 39篇 |
2007年 | 44篇 |
2006年 | 45篇 |
2005年 | 38篇 |
2004年 | 34篇 |
2003年 | 36篇 |
2002年 | 34篇 |
2001年 | 37篇 |
2000年 | 19篇 |
1999年 | 24篇 |
1998年 | 16篇 |
1997年 | 25篇 |
1996年 | 28篇 |
1995年 | 19篇 |
1994年 | 29篇 |
1993年 | 23篇 |
1992年 | 18篇 |
1991年 | 25篇 |
1990年 | 15篇 |
1989年 | 8篇 |
1988年 | 12篇 |
1987年 | 6篇 |
1986年 | 19篇 |
1985年 | 12篇 |
1984年 | 14篇 |
1983年 | 12篇 |
1982年 | 20篇 |
1981年 | 13篇 |
1980年 | 17篇 |
1979年 | 11篇 |
1978年 | 13篇 |
1977年 | 15篇 |
1976年 | 17篇 |
1975年 | 10篇 |
排序方式: 共有1708条查询结果,搜索用时 15 毫秒
901.
Kara L. Wunderlich Timothy R. Vollmer Karla A. Zabala 《Journal of applied behavior analysis》2017,50(2):418-423
Frequent emesis can cause substantial deleterious effects to a child's health and environment. We conducted a functional analysis of a 3‐year‐old girl's self‐induced emesis and confirmed that emesis was maintained by automatic reinforcement. In a reversal design, we evaluated the efficacy of implementing response blocking at 100% and 50% treatment integrity levels on both attempts and successful production of emesis. One hundred percent blocking, but not 50% blocking, was successful in reducing attempts and emesis below baseline levels. 相似文献
902.
Prior research on the effects of personality on the variability of states has either not assessed states in real-life contexts or not incorporated meaningful contextual information when analyzing state variability. Providing an integrated contextualized approach, we introduce the Within and Across Context (WAC) Variability framework that disentangles real-life within-person fluctuations occurring within and across real-life contexts. To illustrate the utility of this framework, we investigated effects of Big Five personality traits on the level and the within- and cross-context variability of experience-sampled states (affect, self-esteem, behavior) of psychology freshmen (N = 118). Results provide initial empirical support for the meaningful separation of within- and cross-context variability and their distinct relations to personality. 相似文献
903.
The dynamic mediation model (Wilt, Noftle, Fleeson, & Spain, 2012) explains the associations between personality traits and happiness through links between personality states and daily well-being. To test this model, and the mediators of these relations, we examined if between- and within-person variation in personality was associated with daily well-being for undergraduates (N = 133) and US adults (N = 117). The model explained the trait neuroticism and daily well-being association. Also, after controlling for traits, people were happier on days in which they were extraverted, agreeable, conscientious, emotionally stable, and open to experience. Finally, these associations were partially mediated by the satisfaction of daily psychological needs. We discuss how the operationalization of state extraversion might impact its relation with daily well-being. 相似文献
904.
Recent research has underscored the importance of elucidating specific patterns of emotion that characterise mental disorders. We examined two emotion traits, emotional variability and emotional clarity, in relation to both categorical (diagnostic interview) and dimensional (self-report) measures of major depressive disorder (MDD) and social anxiety disorder (SAD) in women diagnosed with MDD only (n?=?35), SAD only (n?=?31), MDD and SAD (n?=?26) or no psychiatric disorder (n?=?38). Results of the categorical analyses suggest that elevated emotional variability and diminished emotional clarity are transdiagnostic of MDD and SAD. More specifically, emotional variability was elevated for MDD and SAD diagnoses compared to no diagnosis, showing an additive effect for co-occurring MDD and SAD. Similarly diminished levels of emotional clarity characterised all three clinical groups compared to the healthy control group. Dimensional findings suggest that although emotional variability is associated more consistently with depression than with social anxiety, emotional clarity is associated more consistently with social anxiety than with depression. Results are interpreted using a threshold and dose–response framework. 相似文献
905.
Expressing and understanding one's own emotional responses to negative events, particularly those that challenge the attainment of important life goals, is thought to confer physiological benefit. Individual preferences and/or abilities in approaching emotions might condition the efficacy of interventions designed to encourage written emotional processing (EP). This study examines the physiological impact (as indexed by heart rate variability (HRV)) of an emotional processing writing (EPW) task as well as the moderating influence of a dispositional preference for coping through emotional approach (EP and emotional expression (EE)), in response to a laboratory stress task designed to challenge an important life goal. Participants (n?=?98) were randomly assigned to either EPW or fact control writing (FCW) following the stress task. Regression analyses revealed a significant dispositional EP by condition interaction, such that high EP participants in the EPW condition demonstrated higher HRV after writing compared to low EP participants. No significant main effects of condition or EE coping were observed. These findings suggest that EPW interventions may be best suited for those with preference or ability to process emotions related to a stressor or might require adaptation for those who less often cope through emotional approach. 相似文献
906.
R. Matt Alderson Connor H. G. Patros Stephanie J. Tarle Kristen L. Hudec Lisa J. Kasper Sarah E. Lea 《Child neuropsychology》2017,23(3):255-272
Working memory (WM) and behavioral inhibition impairments have garnered significant attention as candidate core features, endophenotypes, and/or associated neurocognitive deficits of attention-deficit/hyperactivity disorder (ADHD). The relationship between ADHD-related WM and inhibition deficits remains relatively unclear, however, with inferences about the constructs’ directional relationship stemming predominantly from correlational research. The current study utilized a dual-task paradigm to experimentally examine the relationship between ADHD-related WM and behavioral inhibition deficits. A total of 31 boys (15 ADHD and 16 typically developing [TD]) aged 8–12 years completed WM (1-back and 2-back), behavioral inhibition (stop-signal task [SST]), and dual-condition (1-back/SST and 2-back/SST) experimental tasks. Children with ADHD exhibited significant, large-magnitude WM deficits for the 1-back condition but were not significantly different from children in the TD group for the 2-back, 1-back/SST, and 2-back/SST conditions. Children with ADHD also exhibited significant inhibition deficits for the SST, 1-back/SST, and 2-back/SST conditions, but the within-group effect was not significant. The findings suggest that ADHD-related stop-signal demands are upstream, or compete for, resources involved in controlled-focused attention and/or other central executive (CE), WM processes. 相似文献
907.
The current review presents a theory-guided review of the existing cognitive behavioral therapy (CBT) interventions for attention-deficit/hyperactivity disorder (ADHD) in college students. Across the eight studies that investigated this topic, moderate reductions were shown in inattentive symptoms but little to no change was reported in hyperactive/impulsive symptoms. Results indicated a moderate treatment effect on self-reported quality of life and school/work functioning, yet less of an impact on GPA, response inhibition, social functioning, and executive functioning. Methodological and statistical problems and inconsistencies were noted. Since college students are emerging adults, it is likely that the optimum CBT intervention for college students with ADHD lies somewhere in between the existing clinic-based adult ADHD CBT interventions as well as the school-based adolescent ADHD psychosocial interventions. Directions for future research and recommendations for clinicians in university settings are provided in an attempt to further develop the existing college students CBT clinical research evidence base. 相似文献
908.
夏鹏 《医学与哲学(人文社会医学版)》2011,(10):25-26,40
本研究通过对69例CHD患者(完成冠状动脉造影)进行Gensini评分、分组,同时设正常对照组56例。全部进行24h动态心电图监测,并做时域指标和频域指标的HRV分析。结果显示CHD组HRV各项指标均低于对照组(P〈0.05),不同冠状动脉病变范围和程度其时域指标及频域指标降低程度不同,各组对照具有显著性差异(P〈0.... 相似文献
909.
910.
Johannes Keller Herbert Bless Dieter Kleinböhl 《Journal of experimental social psychology》2011,47(4):849-852
This research addresses flow theory according to which the compatibility of skills and task demands involved in an activity elicits flow experiences that render the activity intrinsically rewarding. Departing from correlational research, we applied experimental paradigms designed to test the impact of a skills-demands-compatibility on the emergence of flow in computerized tasks. On the one hand, the results from self-reports support the balance hypothesis and indicate that skills-demands-compatibility results in a pleasurable flow experience. On the other hand, the results also indicate that skills-demands-compatibility resulted in (a) reduced heart rate variability indicating enhanced mental workload, and (b) stress as indicated by relatively high levels of salivary cortisol. These results indicate that flow experiences combine subjectively positive elements with physiological elements reflecting strainful tension and mental load. 相似文献