全文获取类型
收费全文 | 7356篇 |
免费 | 972篇 |
国内免费 | 819篇 |
出版年
2024年 | 19篇 |
2023年 | 159篇 |
2022年 | 170篇 |
2021年 | 274篇 |
2020年 | 424篇 |
2019年 | 477篇 |
2018年 | 355篇 |
2017年 | 475篇 |
2016年 | 457篇 |
2015年 | 292篇 |
2014年 | 357篇 |
2013年 | 1205篇 |
2012年 | 245篇 |
2011年 | 354篇 |
2010年 | 234篇 |
2009年 | 364篇 |
2008年 | 431篇 |
2007年 | 348篇 |
2006年 | 346篇 |
2005年 | 323篇 |
2004年 | 275篇 |
2003年 | 244篇 |
2002年 | 223篇 |
2001年 | 151篇 |
2000年 | 145篇 |
1999年 | 130篇 |
1998年 | 88篇 |
1997年 | 69篇 |
1996年 | 58篇 |
1995年 | 64篇 |
1994年 | 63篇 |
1993年 | 44篇 |
1992年 | 28篇 |
1991年 | 38篇 |
1990年 | 22篇 |
1989年 | 22篇 |
1988年 | 23篇 |
1987年 | 11篇 |
1986年 | 11篇 |
1985年 | 16篇 |
1984年 | 18篇 |
1983年 | 9篇 |
1982年 | 13篇 |
1981年 | 10篇 |
1980年 | 12篇 |
1979年 | 13篇 |
1978年 | 14篇 |
1977年 | 12篇 |
1976年 | 9篇 |
1975年 | 3篇 |
排序方式: 共有9147条查询结果,搜索用时 15 毫秒
31.
A temporal limit on the effect of future food on current performance in an analogue of foraging and welfare 总被引:6,自引:5,他引:1
下载免费PDF全文
![点击此处可从《Journal of the experimental analysis of behavior》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Timberlake W 《Journal of the experimental analysis of behavior》1984,41(2):117-124
Rats obtained access to food twice each 24-hour period. The first session was a work session in which food was available on a progressive-ratio schedule. During the second session, which occurred between 1 and 23 hours after the work session, food was freely available up to a fixed total intake each 24 hours. The situation resembled elements of several real world circumstances, including the choice between continuing to forage in a rapidly depleting patch and waiting for a better patch, and between working now and receiving a guaranteed income later. The purpose of the experiment was to explore the time period over which future access to reward could affect current responding. Contrary to what might be expected from recent theorizing, anticipation of future food delayed by an hour or more after the start of the work session had no effect on current performance. Food intake was high and constant during work sessions except for a prefeeding effect that occurred when the free session closely preceded the next day's work session. Also, an increase in the difficulty of the work schedule increased the amount of work and the maximum price paid for food as if the work session were the only time food was available. The results indicate the importance of considering temporal limits in theories that require animals to integrate input over time to determine the allocation of resources among alternatives. 相似文献
32.
33.
Shawn Simpson 《Metaphilosophy》2023,54(1):134-144
The relationship between American pragmatism and logical empiricism is complicated at best. The received view is that by around the late 1930s or early 1940s pragmatism had been replaced, supplanted, or eclipsed by the younger and more logic-oriented form of empiricism developed in interwar Vienna. Recently, however, this picture has been challenged, and this paper offers further reasons for thinking that the received view is inadequate. Through a critical examination of William James's Pragmatism and “The Sentiment of Rationality” and Rudolf Carnap's “Elimination of Metaphysics Through Logical Analysis of Language” and other works, the paper builds a case for the existence of a rather striking correspondence between the work of one of pragmatism's most vaunted figures and the thought of logical empiricism's most famous advocate. Not only were both philosophers interested in what might be called metaphilosophy or the psychology of philosophy, both held very similar deflationary views. 相似文献
34.
35.
Erik Goodwyn 《The Journal of analytical psychology》2023,68(1):109-132
Since Jung’s death in 1961, scholars have attempted to integrate growing biological science data into Jungian concepts such as the collective unconscious, instincts and the archetypes. This enterprise has been challenging due to persistent false dichotomies of gene and environment occasionally arising. Recent works by Roesler (2022a, 2022b) for example, have raised objections to the biological theory of archetypes, but the objections are plagued by such dichotomies. The concept of phenotypic plasticity, however, helps to both avoid this problem as well as bridge the gap between competing theories into a more integrated model with solid biological foundations. 相似文献
36.
37.
基于ABR模型考察奖赏预期和奖赏结果对不同难度词对记忆与元记忆的影响。结果发现:(1)限时学习条件下,奖赏结果促进不同难度词对记忆成绩和学习判断,奖赏预期仅提高简单词对的记忆成绩。(2)自定步调学习条件下,定时学习判断时奖赏结果仅影响学习判断;奖赏预期促进高难度词对的学习时间分配,从而提高记忆成绩和学习判断。(3)在自定步调学习时,奖赏预期超越难度成为影响学习时间分配的因素。以上结果表明,个体会综合奖赏预期、奖赏结果和难度构建学习议程,足够大的奖赏预期会超越难度成为议程构建的主导因素。但奖赏预期和奖赏结果对记忆成绩、学习时间分配和学习判断的影响受学习条件调节。 相似文献
38.
Code-switching occurs regularly in the input to bilingual children. Yet, the effect of code-switched input on language development is unclear. To test whether word learning would be affected by code-switching, Spanish–English bilingual children (N = 45, 19 boys, MeanAge = 5.05 years; ethnicity: 37 Hispanic/Latino, six Non-Hispanic/Latino, two unreported) were taught English-like novel words in two conditions. In the English-only condition, definitions for novel words were provided entirely in English. In the code-switch condition, definitions for novel words were provided in English and Spanish, incorporating code-switches. Children required fewer exposures to retain novel words in the code-switch than the English-only condition and this effect was not moderated by children's language ability or exposure to code-switching, suggesting that code-switched input does not pose word-learning risks to bilingual children, including children with lower levels of language ability. 相似文献
39.
Wm. Taylor Tollison 《Teaching Theology & Religion》2023,26(1):44-55
This paper sets forth a proposal for an ecological pedagogy of embeddedness informed by place-based, challenge-based, and competency-based methodologies. While some theological institutions have begun implementing principles from competency-based models, theological educators have not adequately explored the resources within place-based and challenge-based systems. This paper will contribute to the literature on theological education in three distinct ways: first, this proposal will perform the oft-overlooked task of bringing these three pedagogical models into conversation with one another; second, this proposal will aim the outcomes and effects of the three pedagogical models toward the flourishing of the communities in which institutions are embedded; and third, this proposal will break new ground in its application of these three pedagogical systems to the context of a theological seminary. 相似文献
40.
自闭症谱系障碍(Autism Spectrum Disorder, ASD)表现为社会交往困难以及重复刻板兴趣或行为。社交动机理论提出ASD个体是由于社交动机缺乏导致的社交障碍。目前该理论缺乏理论元素及结构关系的系统论证, 及基于此理论的低龄ASD儿童群体的研究证据。本研究拟采用心理实验法、眼动及近红外脑成像技术, 探索低龄ASD儿童早期社交奖赏、社交定向异常眼动标记及眶额叶脑区活动的神经机制。此外, 通过音乐奖赏强化学习的干预方式改善该理论的核心元素(社交奖赏), 观测能否改善ASD儿童的社交动机。本研究的开展有望对该理论进行系统验证, 并形成改善社交行为的潜在干预方案。 相似文献