全文获取类型
收费全文 | 372篇 |
免费 | 71篇 |
国内免费 | 104篇 |
专业分类
547篇 |
出版年
2023年 | 9篇 |
2022年 | 18篇 |
2021年 | 13篇 |
2020年 | 24篇 |
2019年 | 24篇 |
2018年 | 18篇 |
2017年 | 28篇 |
2016年 | 26篇 |
2015年 | 15篇 |
2014年 | 25篇 |
2013年 | 70篇 |
2012年 | 19篇 |
2011年 | 24篇 |
2010年 | 12篇 |
2009年 | 25篇 |
2008年 | 17篇 |
2007年 | 22篇 |
2006年 | 8篇 |
2005年 | 10篇 |
2004年 | 22篇 |
2003年 | 15篇 |
2002年 | 11篇 |
2001年 | 9篇 |
2000年 | 8篇 |
1999年 | 7篇 |
1998年 | 2篇 |
1997年 | 4篇 |
1996年 | 3篇 |
1995年 | 4篇 |
1994年 | 3篇 |
1993年 | 3篇 |
1991年 | 1篇 |
1990年 | 3篇 |
1989年 | 3篇 |
1988年 | 4篇 |
1987年 | 3篇 |
1986年 | 3篇 |
1985年 | 2篇 |
1984年 | 4篇 |
1983年 | 2篇 |
1982年 | 3篇 |
1981年 | 3篇 |
1980年 | 5篇 |
1979年 | 2篇 |
1978年 | 2篇 |
1977年 | 1篇 |
1976年 | 2篇 |
1975年 | 2篇 |
1974年 | 1篇 |
1973年 | 2篇 |
排序方式: 共有547条查询结果,搜索用时 0 毫秒
221.
工作记忆中的反词长效应(reverse word-length effect)指在对长词和短词混合的词表进行即时序列回忆时, 独立长词回忆成绩优于独立短词的现象。以汉字词语为材料通过3个实验探讨反词长效应的机制。实验1采用纯粹词表和长短词混合词表, 既得到纯粹词词长效应, 也得到独立词反词长效应。实验2削弱了长短词之间的词长差异, 结果独立词反词长效应消失, 且独立词回忆成绩优于纯粹词。实验3设计了视觉延迟条件, 得到与实验1类似的结果, 只是独立词反词长效应有所削弱。三个实验的结果并不一致, 无法用现有的语音回路理论或SIMPLE理论进行很好地解释, 理论的整合与创新显得非常重要。因此, 提出多重编码以既相互竞争又相互补充方式进行平行加工的观点进行更完整地解释。 相似文献
222.
223.
224.
假设检验思想的提出者Fisher与Neyman–Pearson在统计模型的方法论基础、两类错误的性质、显著性水平的理解、以及假设检验的功能等方面存在诸多分歧, 使得心理统计中最常用的原假设显著性检验模式呈现出隐含的各种矛盾, 从而引发了应用上的争议。心理统计不仅需要检讨现有检验模型的模糊之处和提出其他补充性的统计推论方式,更应注重反思心理统计的教育传统, 以建立更加开放和多元的统计应用视野, 使心理统计为更好地心理学研究服务。 相似文献
225.
226.
Grace RC 《Journal of the experimental analysis of behavior》1994,61(1):113-129
An extension of the generalized matching law incorporating context effects on terminal-link sensitivity is proposed as a quantitative model of behavior under concurrent chains. The contextual choice model makes many of the same qualitative predictions as the delay-reduction hypothesis, and assumes that the crucial contextual variable in concurrent chains is the ratio of average times spent, per reinforcement, in the terminal and initial links; this ratio controls differential effectiveness of terminal-link stimuli as conditioned reinforcers. Ninety-two concurrent-chains data sets from 19 published studies were fitted to the model. Averaged across all studies, the model accounted for 90% of the variance in pigeons' relative initial-link responding. The model therefore demonstrates that a matching law analysis of concurrent chains—the assumption that relative initial-link responding equals relative terminal-link value—remains quantitatively viable. Because the model reduces to the generalized matching law when terminal-link duration is zero, it provides a quantitative integration of concurrent schedules and concurrent chains. 相似文献
227.
The delay-reduction hypothesis of conditioned reinforcement and punishment: Observing behavior 总被引:7,自引:6,他引:1 下载免费PDF全文
Pigeons responded in an observing-response procedure in which three fixed-interval components alternated. Pecking one response key produced food reinforcement according to a mixed schedule. Pecking the second (observing) key occasionally replaced the mixed-schedule stimulus with the stimulus correlated with the fixed-interval component then in effect. In Experiment 1, observing was best maintained by stimuli correlated with a reduction in mean time to reinforcement. That finding was consistent with the conditioned-reinforcement hypothesis of observing behavior. However, low rates of observing were also maintained by stimuli not representing delay reduction. Experiment 2 assessed the role of sensory reinforcement. It showed that response rate was higher when maintained by stimuli uncorrelated with reinforcement delay than when the stimuli were correlated with a delay increase. This latter result supports a symmetrical version of the conditioned-reinforcement hypothesis that requires suppression by stimuli correlated with an increase in time to reinforcement. The results were inconsistent with hypotheses stressing the reinforcing potency of uncertainty reduction. 相似文献
228.
229.
大学生形成析取概念的假设检验策略研究 总被引:8,自引:1,他引:7
运用布鲁纳等人设计的用以研究合取概念的实验材料,研究了大学生形成合取、维度内析取、维度间析取等人工概念的假设检验策略。结果表明,大学生倾向于优先使用单维检验策略(包括单维变化策略和单维肯定策略)。这种策略有利于很快解决合取问题和维度内析取问题,却不利于维度间析取任务的完成,因此大学生解决维度间析取的成功率显著低于合取和维度内析取。 相似文献
230.
Calvin W Vraa 《Journal of Vocational Behavior》1974,4(1):49-54
The increase in junior colleges imposed new demands on counselors. Some areas to be investigated are the differences in counseling programs between junior colleges and universities; the differences in student bodies; and the importance of vocational guidance. This study addresses itself to elements of those areas.Male and female samples were drawn from two rural educational institutions: a four year university and a junior college. Differences in vocational interest orientations were explored through the nonoccupational scales of the Strong Vocational Interest Blank (SVIB). For males significant differences were found on the academic achievement, diversity of interest, managerial orientation, and occupational level scales. Females differed on the diversity of interest scales. 相似文献