全文获取类型
收费全文 | 1281篇 |
免费 | 156篇 |
国内免费 | 202篇 |
出版年
2024年 | 2篇 |
2023年 | 22篇 |
2022年 | 42篇 |
2021年 | 39篇 |
2020年 | 76篇 |
2019年 | 93篇 |
2018年 | 90篇 |
2017年 | 96篇 |
2016年 | 106篇 |
2015年 | 44篇 |
2014年 | 79篇 |
2013年 | 264篇 |
2012年 | 69篇 |
2011年 | 70篇 |
2010年 | 41篇 |
2009年 | 50篇 |
2008年 | 58篇 |
2007年 | 63篇 |
2006年 | 38篇 |
2005年 | 44篇 |
2004年 | 41篇 |
2003年 | 31篇 |
2002年 | 40篇 |
2001年 | 20篇 |
2000年 | 14篇 |
1999年 | 8篇 |
1998年 | 18篇 |
1997年 | 12篇 |
1996年 | 11篇 |
1995年 | 5篇 |
1994年 | 8篇 |
1993年 | 7篇 |
1992年 | 3篇 |
1991年 | 1篇 |
1990年 | 6篇 |
1989年 | 2篇 |
1988年 | 2篇 |
1987年 | 2篇 |
1986年 | 4篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1981年 | 3篇 |
1980年 | 2篇 |
1978年 | 5篇 |
1977年 | 2篇 |
1976年 | 2篇 |
1975年 | 1篇 |
排序方式: 共有1639条查询结果,搜索用时 15 毫秒
171.
172.
采用图画辅助程序和图示评定量表,对四个年龄组80名儿童的分离焦虑进行了探讨。结果发现:(1)随年龄增加,儿童分离焦虑逐渐下降;(2)3—5岁儿童分离焦虑最高;(3)儿童直接分离焦虑高于间接分离焦虑;(4)直接分离与间接分离情景有两个完全不同的因素。 相似文献
173.
Chester Wolfsont 《Journal of Adult Development》2002,9(3):187-203
A single session intervention was given individually to 4 adults in order to assist them in achieving their personal goals by improving their behavioral skills for achieving the goals and their conceptual understanding of & #x201C;how to & #x201D; attain these goals. The method was based on a brain-ability analysis of understanding & #x201C;conservation & #x201D; on Jean Piaget's conservation tasks combined with Paul and Gail Dennison's Brain Gym & #x201C;balance & #x201D; procedure. My & #x201C;whole brain understanding & #x201D; model (C. A. Wolfsont, 1999, 2000) and M. L. Commons et al.'s Hierarchical Complexity Scoring System manual were used to analyze the verbal protocols (M. L. Commons et al., 1992; Commons, Danaher, & Meaney, 2000). Increases were found in the participants' conceptual understanding and in the complexity of their performance. 相似文献
174.
Michael Smith 《Ethical Theory and Moral Practice》2002,5(3):305-320
Evaluative judgements have both belief-like and desire-like features. While cognitivists think that they can easily explain the belief-like features, and have trouble explaining the desire-like features, non-cognitivists think the reverse. I argue that the belief-like features of evaluative judgement are quite complex, and that these complexities crucially affect the way in which an agent's values explain her actions, and hence the desire-like features. While one form of cognitivism can, it turns out that non-cognitivism cannot, accommodate all of these complexities. The upshot is that that form of cognitivism can explain both features of evaluative judgements, and that non-cognitivism can explain neither. 相似文献
175.
176.
Nobuyoshi Iwaki Makoto Miyatani Tamotsu Toshima 《The Japanese psychological research》2003,45(2):100-108
Abstract: In the Eriksen task, we examined the hypothesis ( Iwaki, 1998 ) that a negative event‐related potential, which was enlarged at the frontal site synchronized with the presentation of an erroneous response causing stimulus, is related to the response‐stop function. Fourteen subjects responded selectively with their hands to the stimuli that consisted of a central target letter and surrounding compatible noise letters (e.g., HHHHH) or incompatible noise (e.g., SHHHS for small‐conflict condition or SSHSS for large‐conflict). The results showed that the increased negativity for the incompatible stimuli was synchronized with the stimulus onset but not with the response. Based on the hypothesis above, it is predicted that greater enhancement of an erroneous response by a stimulus causes the response‐stop to work harder in order to avoid an error, and this results in the larger negativity. This was supported by the evidence showing that the negativity was largest for the large‐conflict incompatible stimulus, followed by the small‐conflict, and then the compatible. We also discuss the possibility that the negativity is the NO‐GO potential concerned with the response‐stop function. 相似文献
177.
Gregory D Webster 《Journal of experimental social psychology》2003,39(6):644-652
Archival studies of within-family prosocial behavior (Judge & Hrdy, 1992; Smith, Kish, & Crawford, 1987) have shown that inheritance patterns support Hamilton’s (1964) theory of inclusive fitness, such that people will more of their estates to relatives of closer genetic relatedness. In a survey-based simulation of these studies, students allocated one of three lotteries to their blood relatives. As expected, participants allocated greater proportions of their lotteries to relatives of greater genetic relatedness. This effect became stronger with decreasing lottery amounts. Relatives of certain relatedness were favored over relatives of uncertain relatedness (via paternal uncertainty), and this effect was stronger among those with less money to allocate. Male participants tended to favor their young female relatives over their young male relatives when given the smallest lottery, but this sex preference reversed when male participants were given the largest lottery. In general, scarcer resources led to more evolutionarily conservative investment strategies. 相似文献
178.
Visual representations are prevalent in STEM instruction. To benefit from visuals, students need representational competencies that enable them to see meaningful information. Most research has focused on explicit conceptual representational competencies, but implicit perceptual competencies might also allow students to efficiently see meaningful information in visuals. Most common methods to assess students’ representational competencies rely on verbal explanations or assume explicit attention. However, because perceptual competencies are implicit and not necessarily verbally accessible, these methods are ill‐equipped to assess them. We address these shortcomings with a method that draws on similarity learning, a machine learning technique that detects visual features that account for participants’ responses to triplet comparisons of visuals. In Experiment 1, 614 chemistry students judged the similarity of Lewis structures and in Experiment 2, 489 students judged the similarity of ball‐and‐stick models. Our results showed that our method can detect visual features that drive students’ perception and suggested that students’ conceptual knowledge about molecules informed perceptual competencies through top‐down processes. Furthermore, Experiment 2 tested whether we can improve the efficiency of the method with active sampling. Results showed that random sampling yielded higher accuracy than active sampling for small sample sizes. Together, the experiments provide the first method to assess students’ perceptual competencies implicitly, without requiring verbalization or assuming explicit visual attention. These findings have implications for the design of instructional interventions that help students acquire perceptual representational competencies. 相似文献
179.
Avian brood parasites depend on other species, the hosts, to raise their offspring. During the breeding season, parasitic
cowbirds (Molothrus sp.) search for potential host nests to which they return for laying a few days after first locating them. Parasitic cowbirds
have a larger hippocampus/telencephalon volume than non-parasitic species; this volume is larger in the sex involved in nest
searching (females) and it is also larger in the breeding than in the non-breeding season. In nature, female shiny cowbirds Molothrus bonariensis search for nests without the male’s assistance. Here we test whether, in association with these neuroanatomical and behavioural
differences, shiny cowbirds display sexual differences in a memory task in the laboratory. We used a task consisting of finding
food whose location was indicated either by the appearance or the location of a covering disk. Females learnt to retrieve
food faster than males when food was associated with appearance cues, but we found no sexual differences when food was associated
with a specific location. Our results are consistent with the view that parasitism and its neuroanatomical correlates affect
performance in memory tasks, but the effects we found were not in the expected direction, emphasising that the nature of avian
hippocampal function and its sexual differences are not yet understood.
Received: 30 April 1998 / Accepted after revision: 5 September 1998 相似文献
180.
成就目标对青少年成就动机和学业成就影响的研究 总被引:26,自引:0,他引:26
本研究在迈尔(Maehr)等人研究的基础上,考察了成就目标(任务目标和能力目标)与动机和学业成就之间的关系。结果表明,任务目标通过内部动机对学业成就产生积极的影响,能力目标通过外部动机对学业成就产生消极的影响。 相似文献