全文获取类型
收费全文 | 22095篇 |
免费 | 124篇 |
专业分类
22219篇 |
出版年
2023年 | 12篇 |
2022年 | 11篇 |
2021年 | 27篇 |
2020年 | 37篇 |
2019年 | 47篇 |
2018年 | 3526篇 |
2017年 | 2884篇 |
2016年 | 2303篇 |
2015年 | 237篇 |
2014年 | 119篇 |
2013年 | 268篇 |
2012年 | 642篇 |
2011年 | 2467篇 |
2010年 | 2564篇 |
2009年 | 1510篇 |
2008年 | 1754篇 |
2007年 | 2225篇 |
2006年 | 86篇 |
2005年 | 278篇 |
2004年 | 220篇 |
2003年 | 165篇 |
2002年 | 127篇 |
2001年 | 67篇 |
2000年 | 73篇 |
1999年 | 51篇 |
1998年 | 44篇 |
1997年 | 35篇 |
1996年 | 22篇 |
1995年 | 16篇 |
1994年 | 21篇 |
1993年 | 14篇 |
1992年 | 13篇 |
1991年 | 23篇 |
1990年 | 21篇 |
1989年 | 15篇 |
1988年 | 9篇 |
1987年 | 13篇 |
1986年 | 12篇 |
1985年 | 18篇 |
1984年 | 22篇 |
1983年 | 19篇 |
1982年 | 17篇 |
1981年 | 19篇 |
1980年 | 14篇 |
1979年 | 20篇 |
1978年 | 9篇 |
1977年 | 12篇 |
1976年 | 18篇 |
1975年 | 10篇 |
1974年 | 14篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
141.
Tom G 《The Journal of psychology》2004,138(2):160-170
The endowment effect occurs when ownership of a good leads consumers to value the good more than its market value. Students who were given College of Business Administration insignia mugs to keep valued them significantly more than students who were given the same mugs to examine and return (nonendowment condition). The endowment effect also occurred for plain white mugs. Students who were given plain white mugs to keep valued them more than students who were given the same mugs to examine and return. Ownership of insignia mugs not only resulted in the endowment effect but also resulted in an institutional affinity effect: Students provided higher satisfaction ratings with the College of Business Administration than did students endowed with plain white mugs and students in nonendowed conditions. This study demonstrates the impact of the endowment effect on institutional affinity for insignia goods. However, the tandem endowment-affinity effect occurs at the attitude formation stage, not when an attitude has already been formed. 相似文献
142.
Landau MJ Johns M Greenberg J Pyszczynski T Martens A Goldenberg JL Solomon S 《Journal of personality and social psychology》2004,87(2):190-210
Drawing on lay epistemology theory, the authors assessed a terror management analysis of the psychological function of structuring social information. Seven studies tested variations of the hypothesis that simple, benign interpretations of social information function, in part, to manage death-related anxiety. In Studies 1-4, mortality salience (MS) exaggerated primacy effects and reliance on representative information, decreased preference for a behaviorally inconsistent target among those high in personal need for structure (PNS), and increased high-PNS participants' preference for interpersonal balance. In Studies 5-7, MS increased high-PNS participants' preference for interpretations that suggest a just world and a benevolent causal order of events in the social world. 相似文献
143.
Roberts S 《The Behavioral and brain sciences》2004,27(2):227-62; discussion 262-87
Little is known about how to generate plausible new scientific ideas. So it is noteworthy that 12 years of self-experimentation led to the discovery of several surprising cause-effect relationships and suggested a new theory of weight control, an unusually high rate of new ideas. The cause-effect relationships were: (1) Seeing faces in the morning on television decreased mood in the evening (> 10 hrs later) and improved mood the next day (> 24 hrs later), yet had no detectable effect before that (0-10 hrs later). The effect was strongest if the faces were life-sized and at a conversational distance. Travel across time zones reduced the effect for a few weeks. (2) Standing 8 hours per day reduced early awakening and made sleep more restorative, even though more standing was associated with less sleep. (3) Morning light (1 hr/day) reduced early awakening and made sleep more restorative. (4) Breakfast increased early awakening. (5) Standing and morning light together eliminated colds (upper respiratory tract infections) for more than 5 years. (6) Drinking lots of water, eating low-glycemic-index foods, and eating sushi each caused a modest weight loss. (7) Drinking unflavored fructose water caused a large weight loss that has lasted more than 1 year. While losing weight, hunger was much less than usual. Unflavored sucrose water had a similar effect. The new theory of weight control, which helped discover this effect, assumes that flavors associated with calories raise the body-fat set point: The stronger the association, the greater the increase. Between meals the set point declines. Self-experimentation lasting months or years seems to be a good way to generate plausible new ideas. 相似文献
144.
Faculty members at Canadian business schools were surveyed regarding their ethical perceptions of behaviours related to undergraduate instruction. Fifty-five behavioural statements were listed and respondents were asked to rate the extent to which they felt each behaviour was ethical or unethical. The only item that respondents endorsed as unequivocally unethical (90% indicated it was definitely unethical) was Becoming sexually involved with an undergraduate in one of your classes. We also compared the results of our sample to those of an American sample. Overall, an interesting pattern of differences emerged between the responses obtained in Canada and the U.S. In general, the direction of the significant differences was such that Canadian professors viewed the behaviours in question as less ethical than did their American counterparts. 相似文献
145.
Longitudinal analysis of flexibility and reorganization in early adolescence: a dynamic systems study of family interactions 总被引:1,自引:0,他引:1
A dynamic systems (DS) approach was used to study changes in the structure of family interactions during the early adolescent transition period. Longitudinal observational data were collected in 5 waves prior to, during, and after the transition. Boys (n = 149 families) were videotaped problem solving with their parents at 9-10 years old and every 2 years thereafter until they were 18 years old State space grids (a new DS method) were constructed for all families across all waves. Two variables indexing the variability of the family interactions were derived from the grids. As hypothesized, the DS variables revealed a significant quadratic effect related to a peak in variability at 13-14 years of age. 相似文献
146.
This study evaluated the J. P. Meyer, N. J. Allen, and C. A. Smith (1993) model of occupational commitment using a sample of 678 United Kingdom human resource management specialists. Support was found for the 3-component model, and findings suggest that the consequences of the affective, normative, and continuance components differ. Affective and continuance commitment were negatively related to occupational withdrawal cognitions, whereas normative commitment was negatively related to withdrawal cognitions only when continuance commitment was low. Affective and, to a lesser extent. normative commitment were related to intention to participate in professional activities. Continuance commitment had no significant relationship with intention to participate in professional activities. 相似文献
147.
148.
Low-frequency irregular words are named more slowly and are more error prone than low-frequency regular words (the regularity
effect). Rastle and Coltheart (1999) reported that this irregularity cost is modulated by the serial position of the irregular
grapheme-phoneme correspondence, such that words with early irregularities exhibit a larger cost than words with late ones.
They argued that these data implicate rule-based serial processing, and they also reported a successful simulation with a
model that has a rule-based serial component—the DRC model of reading aloud (Coltheart, Rastle, Perry, Langdon, & Ziegler,
2001). However, Zorzi (2000) also simulated these data with a model that operates solely in parallel. Furthermore, Kwantes
and Mewhort (1999) simulated these data with a serial processing model that has no rules for converting orthography to phonology.
The human data reported by Rastle and Coltheart therefore neither require a serial processing account, nor successfully discriminate
among a number of computational models of reading aloud. New data are presented wherein an interaction between the effects
of regularity and serial position of irregularity is again reported for human readers. The DRC model simulated this interaction;
no other implemented computational model does so. The present results are thus consistent with rule-based serial processing
in reading aloud. 相似文献
149.
Folkman and Lazarus's theory of stress and coping was used to develop a measure assessing the perceived stress within a bicultural context. Middle school students of Mexican descent (N = 881) reported their perceived stress from intergenerational acculturation gaps, within-group discrimination, out-group discrimination, and monolingual stress. Although immigrant youths reported more total number of stressors, U.S.-born youths reported more stress from needing better Spanish and impact of parents' culture. Immigrant youths reported more stress from needing better English in school. Higher stress was associated with more depressive symptoms for both U.S.-born and immigrant youths. Although this study has identified some elements of stress, it has not identified positive coping mechanisms of the bicultural context for Latino youths. 相似文献
150.
A longitudinal study of personality change in young adulthood 总被引:1,自引:0,他引:1
The present research examined personality continuity and change in a sample of young men and women assessed at the beginning and end of college. Two-hundred seventy students completed measures of the Big Five personality traits when they first entered college and then 4 years later. Analyses indicate small- to medium-sized normative (i.e., mean-level) changes, large rank-order stability correlations, high levels of stability in personality structure, and moderate levels of ipsative (i.e. profile) stability. Overall, the findings are consistent with the perspective that personality traits exhibit considerable continuity over time, yet can change in systematic ways. 相似文献