全文获取类型
收费全文 | 696篇 |
免费 | 32篇 |
出版年
2023年 | 5篇 |
2022年 | 6篇 |
2021年 | 9篇 |
2020年 | 11篇 |
2019年 | 17篇 |
2018年 | 18篇 |
2017年 | 24篇 |
2016年 | 21篇 |
2015年 | 14篇 |
2014年 | 22篇 |
2013年 | 66篇 |
2012年 | 25篇 |
2011年 | 29篇 |
2010年 | 21篇 |
2009年 | 15篇 |
2008年 | 35篇 |
2007年 | 28篇 |
2006年 | 40篇 |
2005年 | 29篇 |
2004年 | 27篇 |
2003年 | 19篇 |
2002年 | 23篇 |
2001年 | 13篇 |
2000年 | 15篇 |
1999年 | 17篇 |
1998年 | 7篇 |
1997年 | 17篇 |
1996年 | 16篇 |
1995年 | 16篇 |
1994年 | 6篇 |
1993年 | 11篇 |
1992年 | 6篇 |
1991年 | 8篇 |
1990年 | 5篇 |
1989年 | 9篇 |
1987年 | 5篇 |
1986年 | 9篇 |
1985年 | 4篇 |
1984年 | 6篇 |
1983年 | 4篇 |
1982年 | 6篇 |
1981年 | 4篇 |
1980年 | 3篇 |
1979年 | 4篇 |
1978年 | 6篇 |
1977年 | 6篇 |
1973年 | 3篇 |
1972年 | 5篇 |
1968年 | 3篇 |
1967年 | 2篇 |
排序方式: 共有728条查询结果,搜索用时 31 毫秒
631.
When Are Tutorial Dialogues More Effective Than Reading? 总被引:2,自引:0,他引:2
It is often assumed that engaging in a one-on-one dialogue with a tutor is more effective than listening to a lecture or reading a text. Although earlier experiments have not always supported this hypothesis, this may be due in part to allowing the tutors to cover different content than the noninteractive instruction. In 7 experiments, we tested the interaction hypothesis under the constraint that (a) all students covered the same content during instruction, (b) the task domain was qualitative physics, (c) the instruction was in natural language as opposed to mathematical or other formal languages, and (d) the instruction conformed with a widely observed pattern in human tutoring: Graesser, Person, and Magliano's 5-step frame. In the experiments, we compared 2 kinds of human tutoring (spoken and computer mediated) with 2 kinds of natural-language-based computer tutoring (Why2-Atlas and Why2-AutoTutor) and 3 control conditions that involved studying texts. The results depended on whether the students' preparation matched the content of the instruction. When novices (students who had not taken college physics) studied content that was written for intermediates (students who had taken college physics), then tutorial dialogue was reliably more beneficial than less interactive instruction, with large effect sizes. When novices studied material written for novices or intermediates studied material written for intermediates, then tutorial dialogue was not reliably more effective than the text-based control conditions. 相似文献
632.
The Facing Our Risk of Cancer Empowered (FORCE) website is devoted to women at risk for hereditary breast and ovarian cancers.
One of the most frequently discussed topics on the archived messaged board has been prophylactic mastectomy (PM) for women
with a BRCA1/2 mutation. We reviewed the messages, over a 4 year period, of 21 high risk women and their “conversational”
partners who originally posted on a thread about genetic testing, genetic counseling and family history. We used a qualitative
research inductive process involving close reading, coding and identification of recurrent patterns, relationships and processes
in the data. The women sought emotional support, specific experiential knowledge and information from each other. They frequently
found revealing their post PM status problematic because of possible negative reactions and adopted self-protective strategies
of evasion and concealment outside of their web-based community. The FORCE message board was considered to be a safe place
in which the women could be truthful about their choices and feelings. Results are discussed in terms of Goffman’s concepts
“stigma” and “disclosure” and Charmaz’s concepts “interruptions,” “intrusions” and a “dreaded future.” 相似文献
633.
The authors investigated the effects of mock juror age (younger vs. older), defendant age (22 vs. 65), and type of excuse defense used by defendants (a highly self-inflicted condition, Cocaine Dependency Disorder, vs. a less self-inflicted condition, Posttraumatic Stress Disorder) on mock juror decisions. Ninety-six younger and 96 older adults read a scenario and answered a questionnaire. Results indicated that the defendant using the highly self-inflicted excuse was more likely to receive a guilty verdict and a longer sentence than was the defendant using the less self-inflicted excuse. Older jurors were more certain of their verdicts and saw the defendant as more responsible for his condition than did younger jurors. Defendant age did not affect juror decisions. In addition, excuse type and juror age affected the jurors' perceptions of the victim's responsibility for the attack. The authors discuss the potential influence of juror age on perceptions of defendant responsibility. 相似文献
634.
Social support and prognosis in patients at increased psychosocial risk recovering from myocardial infarction. 总被引:1,自引:0,他引:1
Heather S Lett James A Blumenthal Michael A Babyak Diane J Catellier Robert M Carney Lisa F Berkman Matthew M Burg Pamela Mitchell Allan S Jaffe Neil Schneiderman 《Health psychology》2007,26(4):418-427
OBJECTIVE: To compare the impact of network support and different types of perceived functional support on all-cause mortality or nonfatal reinfarction for patients with a recent acute myocardial infarction (AMI). DESIGN: Participants were recruited from the Enhancing Recovery in Coronary Heart Disease (ENRICHD) trial; 2,481 AMI patients with depression or low social support were randomized to a cognitive-behavioral intervention or to a usual care control group. Data collection for certain measures of social support was limited: 2,466 participants completed the ENRICHD Social Support Inventory; 2,457 completed the Perceived Social Support Scale; 1,296 completed the Social Network Questionnaire; and 707 completed the Interpersonal Support and Evaluation List, Tangible Support subscale. Patients also completed the Beck Depression Inventory and were followed for up to 4.5 years. MAIN OUTCOME MEASURE: Time to death or nonfatal reinfarction. RESULTS: Over the follow-up period, 599 patients (24%) died or had a nonfatal AMI. Survival models controlling age, sex, race, socioeconomic status, smoking, antidepressant use, and a composite measure of increased risk revealed that higher levels of perceived social support were associated with improved outcome for patients without elevated depression but not for patients with high levels of depression. Neither perceived tangible support nor network support were associated with more frequent adverse events. CONCLUSION: AMI patients should be assessed for multiple dimensions of perceived functional support and depression to identify those at increased psychosocial risk who may benefit from treatment. 相似文献
635.
Cronk NJ Slutske WS Madden PA Bucholz KK Heath AC 《Journal of abnormal psychology》2004,113(2):237-247
The authors examined genetic and environmental influences, including the contributions of 2 measured aspects of the shared environment of twins (paternal absence, socioeconomic disadvantage) on the development of mother-reported separation anxiety disorder (SAD) history in a sample of 1,887 female twin pairs. Four different symptom categories of SAD were considered. Results revealed that all 4 SAD symptom categories were significantly heritable, whereas the contribution of shared environmental influences to the variation in risk was significant for only 2 of the 4 SAD categories. Paternal absence was found to have an important influence in vulnerability for SAD, whereas the effect of socioeconomic disadvantage was less robust. Evidence for race differences in the etiology of SAD was not found. 相似文献
636.
This study examined the perceived impact of the events of September 11, 2001, on adolescents distant from the disaster sites and compared these perceptions with changes in everyday moods. A survey of reactions to September 11 was completed 2-5 months after the events by 171 adolescents participating in a longitudinal study of stress and health. Electronic diary ratings of contemporaneous moods before and after the attacks were also compared. Many adolescents distant from the disaster sites reported changes in everyday activities and signs of distress along with some positive outcomes. Elevated levels of negative affect emerged when adolescents were asked directly about the event (focused impact), but no changes were detected in their ongoing, momentary mood reports before and after September 11 (ambient impact). Trait and electronic diary measures of anxiety independently predicted posttraumatic distress. Refined assessments are needed to evaluate the degree to which self-reported traumatic symptoms reflect significant clinical distress versus an attentional focus generated by the question-asking process. 相似文献
637.
D'Onofrio BM Turkheimer E Emery RE Slutske WS Heath AC Madden PA Martin NG 《Developmental psychology》2006,42(3):486-499
Parental divorce is associated with problematic offspring adjustment, but the relation may be due to shared genetic or environmental factors. One way to test for these confounds is to study offspring of twins discordant for divorce. The current analyses used this design to separate the mechanisms responsible for the association between parental divorce, experienced either before or after the age of 16, and offspring well-being. The results were consistent with a causal role of divorce in earlier initiation of sexual intercourse and emotional difficulties, in addition to a greater probability of educational problems, depressed mood, and suicidal ideation. In contrast, the increased risk for cohabitation and earlier initiation of drug use was explained by selection factors, including genetic confounds. ((c) 2006 APA, all rights reserved). 相似文献
638.
This longitudinal study examined the influence of peer selection and socialization on bulimic symptoms in college students. Ninety-eight participants completed measures of bulimic symptoms, self-esteem, perfectionism, and impulsivity in the spring and fall of 2003. Peer influence was assessed by examining similarity among selected peers, unselected peers, and nonpeers over time. Among selected peers, bulimic symptoms demonstrated patterns of socialization, self-esteem and perfectionism demonstrated patterns of selection, and these personality traits longitudinally predicted changes in bulimic symptoms. Unselected peers demonstrated no similarity for bulimia, self-esteem, or perfectionism, but they did evidence socialization for impulsivity. The findings support an etiological model that integrates social and individual risk factors in creating environments that influence disordered eating among college students. 相似文献
639.
Johnson BM Miltenberger RG Knudson P Egemo-Helm K Kelso P Jostad C Langley L 《Journal of applied behavior analysis》2006,39(1):25-34
Although child abduction is a low-rate event, it presents a serious threat to the safety of children. The victims of child abduction face the threat of physical and emotional injury, sexual abuse, and death. Previous research has shown that behavioral skills training (BST) is effective in teaching children abduction-prevention skills, although not all children learn the skills. This study compared BST only to BST with an added in situ training component to teach abduction-prevention skills in a small-group format to schoolchildren. Results showed that both programs were effective in teaching abduction-prevention skills. In addition, the scores for the group that received in situ training were significantly higher than scores for the group that received BST alone at the 3-month follow-up assessment. 相似文献
640.
To investigate interpersonal theory, the authors examined the social behavior of 112 previously unacquainted male-female pairs collaborating on a joint task. Structural equation modeling analyses provided clear evidence of complementarity: In addition to trait affiliation and dominance both predicting situational behavior, each interaction partner's behavior influenced the other's in accordance with the theory, eliciting similar levels of affiliation and opposite levels of dominance. There were also clear biases related to participants' interpersonal traits: When behavior, as indexed by observers, was held constant, more trait affiliative participants tended to view themselves and their partner as warmer during the interaction; likewise, more trait dominant participants perceived themselves to act more dominantly than they actually did. Throughout, there were no sex differences. 相似文献