全文获取类型
收费全文 | 1304篇 |
免费 | 67篇 |
国内免费 | 1篇 |
专业分类
1372篇 |
出版年
2024年 | 2篇 |
2023年 | 14篇 |
2022年 | 24篇 |
2021年 | 25篇 |
2020年 | 36篇 |
2019年 | 40篇 |
2018年 | 94篇 |
2017年 | 88篇 |
2016年 | 64篇 |
2015年 | 35篇 |
2014年 | 36篇 |
2013年 | 165篇 |
2012年 | 82篇 |
2011年 | 78篇 |
2010年 | 60篇 |
2009年 | 42篇 |
2008年 | 79篇 |
2007年 | 61篇 |
2006年 | 53篇 |
2005年 | 46篇 |
2004年 | 41篇 |
2003年 | 33篇 |
2002年 | 28篇 |
2001年 | 12篇 |
2000年 | 10篇 |
1999年 | 17篇 |
1998年 | 6篇 |
1997年 | 12篇 |
1996年 | 6篇 |
1995年 | 3篇 |
1994年 | 11篇 |
1993年 | 5篇 |
1992年 | 7篇 |
1991年 | 3篇 |
1990年 | 2篇 |
1989年 | 5篇 |
1988年 | 3篇 |
1987年 | 4篇 |
1986年 | 2篇 |
1985年 | 5篇 |
1982年 | 2篇 |
1981年 | 6篇 |
1980年 | 2篇 |
1976年 | 2篇 |
1974年 | 4篇 |
1972年 | 2篇 |
1968年 | 2篇 |
1965年 | 2篇 |
1962年 | 2篇 |
1960年 | 1篇 |
排序方式: 共有1372条查询结果,搜索用时 0 毫秒
171.
Patricia R. DeLucia Manuel Meza-Arroyo Robin Baurès Manish Ranjit Simon Hsiang Jamie C. Gorman 《Ecological Psychology》2016,28(1):1-22
In many previous studies of time-to-contact (TTC) judgments of approaching objects, a response was measured after observers viewed the entire event and was used to infer the informational basis for the judgment. Such measures primarily reflect the information used at the end of the approach event and may not reveal whether observers used different information at different times during the event. Evidence indicates that observers use multiple information sources and that the effectiveness of information varies with distance. We introduce a method in which observers continuously report which of 2 approaching objects would reach them first, throughout the approach. We identified the occurrence and time of response reversals. Most observers changed their relative TTC judgments during the event. The pattern of responses indicated that observers did not use tau early during the approach when objects were far and did not use optical size later when the objects were closer. Most observers relied on either optical size or optical expansion rate early during the approach and expansion rate later during the event, although there were individual differences. A single relative TTC judgment measured after observers view an approach event may not reflect judgments or their informational basis throughout the entire event. 相似文献
172.
173.
Contextual Control in Visuospatial Perspective‐Taking Skills in Adults with Intellectual Disabilities 下载免费PDF全文
The aim of this study was to teach left/right (Experiment 1) and near/far (Experiment 2) discrimination with reference both to self and to another person. The procedures used involved teaching discrimination in expressive language (speaker behavior) and then testing the transfer of learning into receptive language (listener behavior). A total of six intellectually disabled adults took part in the study, four in Experiment 1 and two in Experiment 2. The results showed that the subjects learned the target behavior in expressive language and performed correctly in tests to confirm the transfer of learning to receptive language. Experiments to analyze the function of the stimuli involved in receptive language share a certain amount of common ground with research into conditional discrimination under contextual control. The procedures used in such experiments may additionally enhance the teaching of visuospatial perspective‐taking skills. Copyright © 2015 John Wiley & Sons, Ltd. 相似文献
174.
Despite its potential for radically reducing the harm inflicted on nonhuman animals in the pursuit of food, there are a number of objections grounded in animal ethics to the development of in vitro meat. In this paper, I defend the possibility against three such concerns. I suggest that worries about reinforcing ideas of flesh as food and worries about the use of nonhuman animals in the production of in vitro meat can be overcome through appropriate safeguards and a fuller understanding of the interests that nonhuman animals actually possess. Worries about the technology reifying speciesist hierarchies of value are more troublesome, however. In response to this final challenge, I suggest that we should be open not just to the production of in vitro nonhuman flesh, but also in vitro human flesh. This leads to a consideration of the ethics of cannibalism. The paper ultimately defends the position that cannibalism simpliciter is not morally problematic, though a great many practices typically associated with it are. The consumption of in vitro human flesh, however, is able to avoid these problematic practices, and so should be considered permissible. I conclude that animal ethicists and vegans should be willing to cautiously embrace the production of in vitro flesh. 相似文献
175.
This study examined sex differences in executive function in middle-aged gonadectomized marmosets (Callithrix jacchus) with or without hormonal replacement. We tested ten castrated male (mean age 5.5 years) marmosets treated with testosterone cypionate (T, n = 5) or vehicle (n = 5) on Reversal Learning, which contributes to cognitive flexibility, and the Delayed Response task, measuring working memory. Their performance was compared to that of 11 ovariectomized females (mean age = 3.7 years) treated with Silastic capsules filled with 17-β estradiol (E2, n = 6) or empty capsules (n = 5), previously tested on the same tasks (Lacreuse et al. in J Neuroendocrinol 26:296–309, 2014. doi: 10.1111/jne.12147). Behavioral observations were conducted daily. Females exhibited more locomotor behaviors than males. Males and females did not differ in the number of trials taken to reach criterion on the reversals, but males had significantly longer response latencies, regardless of hormone replacement. They also had a greater number of refusals than females. Additionally, both control and T-treated males, but not females, had slower responses on incorrect trials, suggesting that males were making errors due to distraction, lack of motivation or uncertainty. Furthermore, although both males and females had slower responding following an incorrect compared to a correct trial, the sex difference in response latencies was disproportionally large following an incorrect trial. No sex difference was found in the Delayed Response task. Overall, slower response latencies in males than females during Reversal Learning, especially during and following an incorrect trial, may reflect greater sensitivity to punishment (omission of reward) and greater performance monitoring in males, compared to females. Because these differences occurred in gonadectomized animals and regardless of hormone replacement, they may be organized early in life. 相似文献
176.
Choice confidence in the webrooming purchase process: The impact of online positive reviews and the motivation to touch 下载免费PDF全文
The webrooming purchase process (i.e. searching for information online and then buying the product offline) is the most extended cross‐channel shopping behaviour. With the aim of offering a better understanding of this behaviour, this research relies on information processing and uncertainty reduction theories to propose that consumers use the online information to make the offline purchase with a higher degree of confidence. We examine the effects of a previous online interaction with a product on the preferences and decision at the physical store, as well as on the outcomes of the experience. In this path to purchase, we analyse how positive online customer reviews, as a specific form of electronic word of mouth, help the consumer to improve their experience, given their great potential to reduce the consumer's uncertainty in a purchase situation. In addition, the role of the motivation to touch the product is examined. The results of two studies show that the combination of an online search and an offline purchase improves the consumers' purchase experience in pre‐choice variables (i.e. purchase intentions), choice and post‐choice variables (i.e. search‐process satisfaction and choice confidence). Moreover, reading a positive online customer review influences choice confidence, and all the variables considered in the research when it is received at the physical store. Finally, the results stress the importance of the motivation to touch when studying multichannel shopping behaviour, given its direct and moderating effects on the webrooming purchase process. Implications for theory and practice are discussed. Copyright © 2016 John Wiley & Sons, Ltd. 相似文献
177.
Luís Cordeiro-Rodrigues 《South African Journal of Philosophy》2016,35(2):184-196
This article investigates whether providing minority groups with power over criminal law can create injustices that target lesbians, gays and bisexuals within those groups. In order to carry out the task of evaluating to what extent providing power over criminal law to minority groups can result in negative consequences for lesbian, gay and bisexual individuals, this paper assesses the work of Ayelet Shachar. I contend that her model leaves lesbians, gays and bisexuals within minorities vulnerable because her division of jurisdictions collapses when put into practice; additionally, her principles do not provide normative guidance for avoiding jurisdictions that criminalise homosexuality, and that protect lesbian, gay and bisexual individuals from violence. This rejection of transformative accommodation, however, does not mean that cultural evidence is irrelevant for criminal procedures. Rather, I assert that cultural evidence is relevant for trials and including it does not jeopardise the interests of lesbian, gay and bisexual individuals. 相似文献
178.
Inês A. Trindade Cláudia Ferreira José Pinto-Gouveia Loes Nooren 《Journal of psychopathology and behavioral assessment》2016,38(2):258-265
The Engaged Living Scale (ELS) is a measure of the process of engaged living, defined by Acceptance and Commitment Therapy as the evaluation and performance of valued life activities. This 16-item measure was recently created and has been validated in middle-aged and chronic pain samples. The aim of the present study was to validate the ELS-16 in a young-adult sample and additionally to develop a shorter ELS. This study was conducted using different samples of Portuguese young-adult college students. The dimensionality of the ELS-16 (which was translated to Portuguese from the original Dutch) was tested through a CFA. The adequacy of the shorter ELS (ELS-9) was also tested through a CFA. The scales’ internal reliability and other psychometric qualities were additionally analysed. Results from the CFA suggested that the model benefits from the establishment of correlations between pairs of error terms of items with similar contents. These results led to the decision to shorten the measure by excluding the item of each pair with the lowest communalities. The ELS-9 was then created and its CFA results revealed good to excellent adjustment values and goodness-of-fit indices. Results also showed that the ELS-16 and the ELS-9 present adequate to good psychometric properties. The present study thus shows that these instruments seem to be reliable measures of engaged living and to perform adequately in young-adult college students, with the ELS-9 being a new contribution to health research and allowing faster administrations. 相似文献
179.
Minna M. Hannula-Sormunen Jake McMullen Pekka Räsänen Janne Lepola Erno Lehtinen 《European Journal of Developmental Psychology》2016,13(1):115-120
Li and Baroody present a study in which they investigate toddlers’ spontaneous attention to exact quantity without acknowledging how previous studies of spontaneous focusing on numerosity (SFON) are related to their concept and methods. In this commentary requested by the European Journal of Developmental Psychology, we argue that the concept and the methods of spontaneous attention to exact quantity in the study of Li and Baroody clearly arise from previous research on SFON, as the authors have previously noted in their paper published in 2008. It is highly questionable whether their approach can be theoretically or methodologically dissociated from the previous research on SFON tendency to the extent that it is necessary to use an alternative name for the concept in their study. 相似文献
180.
Minna M. Hannula-Sormunen Jake McMullen Janne Lepola Pekka Räsänen Erno Lehtinen 《European Journal of Developmental Psychology》2016,13(2):179-182
Li and Baroody presented a study in which they investigate children’ spontaneous attention to exact quantity without acknowledging how previous studies of spontaneous focusing on numerosity (SFON) are related to their concept and methods. The authors’ reaction to our pointing this out makes it is clear that SFON research has had foundational role in the development of Baroody and his colleagues spontaneous attention to number (SAN) idea. Thus the authors must acknowledge the SFON literature as the substantial part of their theoretical and methodological construct. The latest definition of SAN states this undeniably. “SAN is the attentional process that underlies exact number recognition initiated by the mathematical thinking triggered by SFON (e.g., attention to “threeness” directed by conceptual knowledge of “three” activated by SFON).” Furthermore, in their response, Dr Baroody and Dr Li admit that “An awareness of the SFON literature did help us explicitly recognize that, given the ambiguous instructions that do not explicitly direct a child’s attention to number, both the nonverbal production and matching tasks were useful in assessing unguided or spontaneous attention to a number.” It is surprising that in their response to the European Journal of Educational Psychology, the authors maintain their claim that they have cited the SFON literature adequately in their study about SAN. 相似文献