全文获取类型
收费全文 | 2392篇 |
免费 | 114篇 |
出版年
2021年 | 28篇 |
2020年 | 43篇 |
2019年 | 37篇 |
2018年 | 53篇 |
2017年 | 58篇 |
2016年 | 72篇 |
2015年 | 44篇 |
2014年 | 45篇 |
2013年 | 241篇 |
2012年 | 102篇 |
2011年 | 86篇 |
2010年 | 55篇 |
2009年 | 53篇 |
2008年 | 81篇 |
2007年 | 81篇 |
2006年 | 74篇 |
2005年 | 62篇 |
2004年 | 53篇 |
2003年 | 63篇 |
2002年 | 63篇 |
2001年 | 50篇 |
2000年 | 71篇 |
1999年 | 38篇 |
1998年 | 42篇 |
1997年 | 29篇 |
1996年 | 24篇 |
1994年 | 20篇 |
1993年 | 25篇 |
1992年 | 33篇 |
1991年 | 48篇 |
1990年 | 25篇 |
1989年 | 32篇 |
1988年 | 22篇 |
1987年 | 25篇 |
1986年 | 20篇 |
1985年 | 30篇 |
1984年 | 19篇 |
1983年 | 18篇 |
1982年 | 24篇 |
1981年 | 31篇 |
1980年 | 29篇 |
1979年 | 26篇 |
1978年 | 25篇 |
1975年 | 33篇 |
1974年 | 33篇 |
1973年 | 26篇 |
1972年 | 22篇 |
1971年 | 21篇 |
1968年 | 19篇 |
1967年 | 19篇 |
排序方式: 共有2506条查询结果,搜索用时 15 毫秒
191.
Reports the retraction of "No pain, no gain: The conditions under which upward comparisons lead to better performance" by Camille S. Johnson and Diederik A. Stapel (Journal of Personality and Social Psychology, 2007[Jun], Vol 92[6], 1051-1067). This retraction follows the results of an investigation into the work of Diederik A. Stapel (further information on the investigation can be found here: https://www.commissielevelt.nl/). The Levelt Committee has determined data supplied by Diederik A. Stapel to be fraudulent. His co-author was unaware of his actions and was not involved in the collection of the fraudulent data. (The following abstract of the original article appeared in record 2007-07951-007.) In 3 studies, the authors explored the relation between threatening upward social comparisons and performance. In an initial study, participants were exposed to comparison targets who either threatened or boosted self-evaluations and then completed a performance task. Participants exposed to the threatening target performed better than those in a control group, whereas those exposed to the nonthreatening target performed worse. In Study 2, self-affirmation prior to comparison with threatening targets eliminated performance improvements. In Study 3, performance improvements were found only when the performance domain was different from the domain of success of the comparison target. These boundary conditions suggest that increases in performance following social comparison arise from individuals' motivations to maintain and repair self-evaluations. Implications for the study of the behavioral consequences of social comparison are discussed. (PsycINFO Database Record (c) 2012 APA, all rights reserved). 相似文献
192.
Elkins GR Fisher WI Johnson AK Kendrick C Koep L Bunn J Perfect M 《Psychological reports》2012,110(1):218-226
This paper addresses the preliminary development, construct validity, and psychometric properties of a brief self-report measure of psychological distress. 40 items were originally generated by doctoral level psychologists for use in the preliminary clinical sample. Inpatients from a psychiatric unit (N = 125) completed the items, and a principal-components analysis with a direct oblimin rotation was used to evaluate construct validity. The study indicated a four-factor solution, using the constructs of Depression, Hopelessness, Anxiety, and Anger, with good estimates of reliability. After evaluation of factor structure, item analyses, and reliability estimates, a redacted 19-item scale was identified. 相似文献
193.
In the present study, we explored how item repetition affects source memory for new item-feature associations (picture-location or picture-color). We presented line drawings varying numbers of times in Phase 1. In Phase 2, each drawing was presented once with a critical new feature. In Phase 3, we tested memory for the new source feature of each item from Phase 2. Experiments 1 and 2 demonstrated and replicated the negative effects of item repetition on incidental source memory. Prior item repetition also had a negative effect on source memory when different source dimensions were used in Phases 1 and 2 (Experiment 3) and when participants were explicitly instructed to learn source information in Phase 2 (Experiments 4 and 5). Importantly, when the order between Phases 1 and 2 was reversed, such that item repetition occurred after the encoding of critical item-source combinations, item repetition no longer affected source memory (Experiment 6). Overall, our findings did not support predictions based on item predifferentiation, within-dimension source interference, or general interference from multiple traces of an item. Rather, the findings were consistent with the idea that prior item repetition reduces attention to subsequent presentations of the item, decreasing the likelihood that critical item-source associations will be encoded. 相似文献
194.
Johnson T 《The Behavioral and brain sciences》2012,35(1):31-32
Costly punishment's scarcity "in the wild" does not belie strong reciprocity theory as Guala claims. In the presence of strong reciprocators, strategic defectors will cooperate and sanctioning will not occur. Accordingly, natural field experiments are necessary to assess a "wide" reading of costly punishment experiments. One such field experiment exists, and it supports the hypothesis that costly punishment promotes cooperation. 相似文献
195.
Beth Troutman Tracy E. Moran Stephan Arndt Ralph F. Johnson Michael Chmielewski 《Infant mental health journal》2012,33(1):45-54
Maternal parenting self‐efficacy (PSE) is a potential target for infant mental health interventions because it is associated with a number of positive outcomes for children and mothers. Understanding the development of maternal PSE under conditions of increased parenting stress, such as parenting an infant who is easily distressed and difficult to soothe, will contribute to providing more effective interventions. This study examines the development of maternal PSE in mothers of infants with high negative emotionality (NE). The Neonatal Behavioral Assessment Scale (NBAS; T. Brazelton, 1973 ) was administered twice to 111 infants to select a sample of irritable (n = 24) and nonirritable (n = 29) infants for a prospective study comparing the development of PSE in mothers of infants differing in neonatal NE. Consistent with our hypotheses and previous research, at 8 weeks' postpartum, mothers of irritable infants have significantly lower domain‐specific PSE than do mothers of nonirritable infants. Contrary to our predictions, mothers of irritable infants exhibit a significant increase in domain‐specific and domain‐general PSE from 8 to 16 weeks' postpartum. The implications of these results for infant mental health screening, infant mental health interventions, and research on self‐efficacy theory are discussed. 相似文献
196.
Johnson BA Macwilliams B Carey JC Viskochil DH D'Astous JL Stevenson DA 《Human movement science》2012,31(1):247-254
The purpose of this study was to (1) extend the research findings of decreased muscular force production in grip strength to the lower extremity strength of children with NF1 and (2) to determine if there was a relationship between isometric strength and functional activities in children with NF1. Force production was assessed using a hand held dynamometer (HHD) and a functional task (hopping and jumping) on a force plate. Data from twenty-six children with NF1 were compared to data from 48 typically developing children of similar sex, weight and height. Children with NF1 demonstrated statistically significant lower force production with HHD (p<0.01) during hip extension, but similar force production for knee extension and ankle plantar flexion compared to the control group. A relationship existed between the ground reaction forces at take-off from both hopping and jumping and the force generated from knee extensor strength in the NF1 group. The addition of a functional task to hand held dynamometry is useful for determining a relationship between common clinical measures and functional activities. 相似文献
197.
Marital breakup has been associated with numerous behavioral problems in children, such as sexual risk behaviors. This research is the first to examine sexual behaviors of Spanish adolescents related to whether their parents were married or divorced. Participants were 342 boys and girls aged between 14 and 18 years. The sample provided confidential information about their sexual behavior and birth control methods. Significant differences were only found in percentages of adolescents who had engaged in mutual masturbation, intercourse, or oral sex, and who had practiced these sexual relations in the last six months, in both cases, they were higher when the parents had broken their marital relationship. Regarding adolescents of divorced parents, engaging in intercourse is more likely in older teenagers who live with a stepparent. Moreover, older adolescents who were younger when parents divorced and who live in a reconstituted family, have more sexual partners. These and other findings are discussed. 相似文献
198.
Negative emotions are linked with a local, rather than global, visual processing style, which may preferentially facilitate feature-based, relative to holistic, processing mechanisms. Because faces are typically processed holistically, and because social contexts are prime elicitors of emotions, we examined whether negative emotions decrease holistic processing of faces. We induced positive, negative, or neutral emotions via film clips and measured holistic processing before and after the induction: participants made judgements about cued parts of chimeric faces, and holistic processing was indexed by the interference caused by task-irrelevant face parts. Emotional state significantly modulated face-processing style, with the negative emotion induction leading to decreased holistic processing. Furthermore, self-reported change in emotional state correlated with changes in holistic processing. These results contrast with general assumptions that holistic processing of faces is automatic and immune to outside influences, and they illustrate emotion's power to modulate socially relevant aspects of visual perception. 相似文献
199.
200.
We examined the effect of career transition support and three other situational variables — financial reserves, social inclusion, and a partner — on the psychological strain of unemployed managers. We extended the theories of unemployment by investigating the mechanisms by which these four situational variables affect psychological strain. After using qualitative research to explore managers' experiences during unemployment, we used the themes that emerged from this first study to conduct a survey on the unemployment experiences of 281 managers. Each of the situational variables protected unemployed managers from psychological strain through a different pathway. The pathways that emerged were agency, the emotions associated with loss, financial strain, and a positive emotional response. The research provides evidence of the utility of providing a ‘golden parachute’ and the additive effects of financial reserves and social inclusion. Evidence from the research also suggests that support programs for unemployed individuals should focus on enhancing agency and regulating emotions to assist with the transition into employment. 相似文献