全文获取类型
收费全文 | 1017篇 |
免费 | 130篇 |
国内免费 | 211篇 |
出版年
2023年 | 25篇 |
2022年 | 13篇 |
2021年 | 49篇 |
2020年 | 55篇 |
2019年 | 49篇 |
2018年 | 52篇 |
2017年 | 68篇 |
2016年 | 60篇 |
2015年 | 41篇 |
2014年 | 53篇 |
2013年 | 170篇 |
2012年 | 34篇 |
2011年 | 38篇 |
2010年 | 46篇 |
2009年 | 38篇 |
2008年 | 44篇 |
2007年 | 52篇 |
2006年 | 61篇 |
2005年 | 59篇 |
2004年 | 52篇 |
2003年 | 40篇 |
2002年 | 39篇 |
2001年 | 30篇 |
2000年 | 24篇 |
1999年 | 19篇 |
1998年 | 17篇 |
1997年 | 24篇 |
1996年 | 18篇 |
1995年 | 14篇 |
1994年 | 5篇 |
1993年 | 3篇 |
1992年 | 4篇 |
1991年 | 5篇 |
1990年 | 4篇 |
1989年 | 7篇 |
1988年 | 5篇 |
1987年 | 5篇 |
1986年 | 4篇 |
1985年 | 7篇 |
1984年 | 5篇 |
1983年 | 2篇 |
1981年 | 1篇 |
1980年 | 2篇 |
1979年 | 1篇 |
1978年 | 4篇 |
1977年 | 4篇 |
1976年 | 3篇 |
1975年 | 3篇 |
排序方式: 共有1358条查询结果,搜索用时 31 毫秒
911.
信息的性质对内隐社会印象的影响 总被引:4,自引:0,他引:4
为了考察信息的性质对社会印象的影响,通过语义差异法建构了具有六个维度的社会印象量表;采用2×2×8的混合设计,给被试提供自然信息和七类不同性质的社会信息(组内设计),考察了评价人和被评价人性别特征(组间设计)在社会印象形成过程中的作用;同时,还测量了被试的外显性别态度。结果表明,在否定个人智慧、社会地位、性别特征和品质特征时,所形成的社会印象在被评价人性别特征上表现出了差异,并且男女被试都表现出了“好人主义”倾向;在外显性别态度上男女被试设有差异;此外,还分析了用语义差异法测量内隐社会印象的适用性。 相似文献
912.
913.
记录7名左颞叶癫痫病人和9名正常人在四种实验条件下的事件相关电位:(1)听觉脑子诱发电位,(2)红色闪光刺激,(3)陌生人嗓音识别,(4)陌生人面孔识别。实验结果发现,两组被试在视觉信息加工中无差异,在嗓音识别中病人的N150和P300波潜伏期大于正常人,表明其复杂听觉认知功能受到影响.红色闪光刺激和噪音识别条件下,病人的P100波幅大于正常人,说明病人对强刺激的物理强度有较高的反应水平,不易习惯化。 相似文献
914.
915.
The purpose of this research is to assess the extent to which judgmental forecasts are improved by having more contextual and technical knowledge. Contextual information is knowledge gained by practitioners through experience on the job, consisting of general forecasting experience in the industry as well as specific product knowledge. Technical knowledge is knowledge about data analysis and formal forecasting procedures, including information on how to analyze data judgmentally. We directly compared judgmental forecasts of business practitioners with those generated by students, using 22 real-world time series. The practitioners had considerable contextual but no technical knowledge. The students had no contextual but two different levels of technical knowledge. We also generated forecasts with statistical methods to benchmark performance. Results show that contextual knowledge is particularly important in making good judgmental forecasts, while technical knowledge has little value. Practitioner forecasts are better than student forecasts in almost all comparisons. A decisive factor affecting forecast performance appears to be data variability, measured by the coefficient of variation of the time-series data. As the variability of a time series increases, the performance of all forecasts deteriorates, but judgmental forecasts by practitioners become more preferable. Statistical methods have difficulty achieving reasonable forecasts when the data are more variable, whereas judgemental forecasts reinforced by contextual information do relatively well. Data variability is one explanation for the mixed findings of past studies, relative to how well statistical techniques compare with judgment as a forecasting method. 相似文献
916.
Sue R. Beers 《Neuropsychology review》1992,3(4):281-320
A comprehensive review of recent neuropsychological studies of mild head injury (MHI) involving children and adolescents is presented. The seminal work of Rutter and his colleagues is reviewed. An alternative conceptualization of MHI as proposed by various researchers is elaborated and further research investigating the cognitive sequelae of MHI is reviewed. MHI is discussed within the context of development and information processing models. Finally, the sequelae of MHI are reviewed with respect to academic functioning. Methodological problems inherent in studies of MHI are identified and discussed. The studies reviewed here support the conclusion that both the cognitive and emotional consequences of MHI should receive serious evaluation. 相似文献
917.
918.
时序信息提取特点的实验研究 总被引:1,自引:0,他引:1
时距区分性理论认为提取时序信息是在包含一定项目的检索系中检索抽样的过程,通道因素应当对正确率和速度都产生影响.本文分别以英文字母和汉字为材料,对时序信息的提取特点作了两个实验研究.结果表明,只有材料的呈现顺序对时序信息提取的正确率和速度都有影响,通道因素只影响提取的正确率,而速度则未受其影响。显然,用时距区分性理论来说明时序信息提取特点是缺乏足够证据的.本文提出,对时序信息提取机制尚值得进一步研究. 相似文献
919.
SVERKER RUNESON 《Scandinavian journal of psychology》1990,31(3):223-227
Information available for perception has been shown to be specific, to have validity extending over time, and to be meaningful. Thus, cognition cannot be distinguished as that which exclusively provides adaptive coherence of action and reliance on constraints. Transitions between perception and memory/cognition, as two qualitatively distinct modes of knowing, must instead be expected to occur for purposes of ensuring optimal utilization of information relative to its temporal validity and usefulness. 相似文献
920.
Katz HN 《Journal of the experimental analysis of behavior》1976,26(1):45-56
The information hypothesis of conditioned reinforcement predicts that a stimulus that “reduces uncertainty” about the outcome of a trial will acquire reinforcing properties, even when the stimulus reliably predicts nonreinforcement. Four pigeons' key pecks produced one of two 5-sec stimuli with 0.50 probability according to a discriminated variable-interval schedule. One stimulus was followed by reinforcement; a second stimulus was followed by blackout. To the same extent, therefore, both stimuli reduced uncertainty about the possibility that food would arrive at the termination of the schedule interval. When a second key in the chamber was lighted, each peck on it could produce the stimulus preceding reinforcement, the stimulus preceding nonreinforcement, a novel stimulus, or no stimulus, across separate conditions. The stimulus preceding food maintained responding at substantial levels on the second, stimulus-producing, key. Such responding was not maintained by other stimuli. These data, replicated when the stimuli were reversed on the variable-interval schedule, do not support the prediction that uncertainty-reducing stimuli are necessarily conditioned reinforcers. 相似文献