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251.
Multinomialprocessing tree (MPT) models are in wide use as measurement models for analyzing categorical data in cognitive
experiments. The approach involves estimating parameters and conducting hypothesis tests involving parameters that are arrayed
in a tree structure designed to represent latent cognitive processes. The standard inference algorithm for these models is
based on the well-known expectationmaximization (EM) algorithm. On the basis of the original use of the EMalgorithm for MPT
models, this article presents an approach that accelerates the convergence speed of the algorithm by (1) adjusting suitable
initial positions for certain parameters to reduce required iterative times and (2) using a series of operations between/among
a set of matrices that are specific to the original model structure and information to reduce the time required for a single
iteration. As compared with traditional algorithms, the simulation results show that the proposed algorithm has superior efficiency
in interpreted languages and also has better algorithm readability and structure flexibility. 相似文献
252.
团体辅导改善大学生人际关系及心理健康水平的实证研究 总被引:3,自引:0,他引:3
目的:探讨团体心理辅导对改善大学生人际关系及心理健康水平的有效性及可行性。方法:采用单因素重复测量设计自然实验,对16名有改善人际关系愿望的大学生进行为期2个月,共10次的团体心理辅导干预;使用人际关系综合诊断量表和症状自评量表前后施测,结合团体成员的反馈自评和表现进行质的分析。结果:被试人际关系综合诊断量表前后测有差异(t=2.55,p<0.05),症状自评量表总分有显著差异(t=3.12,p<0.01),其中抑郁、敌对因子有显著差异(抑郁因子t=2.95,敌对因子t=2.71),人际关系和偏执因子有差异(人际关系因子t=2.53,偏执因子t=2.57)。结论:人际交往团体辅导对改善大学生的人际关系,提高心理健康水平是有效的。 相似文献
253.
The paper obtains consistent standard errors (SE) and biases of order O(1/n) for the sample standardized regression coefficients with both random and given predictors. Analytical results indicate that
the formulas for SEs given in popular text books are consistent only when the population value of the regression coefficient
is zero. The sample standardized regression coefficients are also biased in general, although it should not be a concern in
practice when the sample size is not too small. Monte Carlo results imply that, for both standardized and unstandardized sample
regression coefficients, SE estimates based on asymptotics tend to under-predict the empirical ones at smaller sample sizes. 相似文献
254.
魏源 《医学与哲学(人文社会医学版)》2006,27(7):43-44
回归内在疗法是一种源于心理动力学的心理治疗技术,以提升来访者自尊与自我价值感、减少自怨自恨、增强自爱与自我抚慰的能力为工作目标,强调自我关爱是心理成长与康复的重要机制.很适合在中国应用. 相似文献
255.
Mean comparisons are of great importance in the application of statistics. Procedures for mean comparison with manifest variables
have been well studied. However, few rigorous studies have been conducted on mean comparisons with latent variables, although
the methodology has been widely used and documented. This paper studies the commonly used statistics in latent variable mean
modeling and compares them with parallel manifest variable statistics. Our results indicate that, under certain conditions,
the likelihood ratio and Wald statistics used for latent mean comparisons do not always have greater power than the Hotelling
T2 statistics used for manifest mean comparisons. The noncentrality parameter corresponding to the T2 statistic can be much greater than those corresponding to the likelihood ratio and Wald statistics, which we find to be different
from those provided in the literature. Under a fixed alternative hypothesis, our results also indicate that the likelihood
ratio statistic can be stochastically much greater than the corresponding Wald statistic. The robustness property of each
statistic is also explored when the model is misspecified or when data are nonnormally distributed. Recommendations and advice
are provided for the use of each statistic.
The research was supported by NSF grant DMS-0437167 and Grant DA01070 from the National Institute on Drug Abuse.
We would like to thank three referees for suggestions that helped in improving the paper. 相似文献
256.
257.
创新在人们日常行为的心理调节中具有重要作用,每个人都具有自我创新的能力。在日常生活中,人们要实现心理和谐要求运用创新心理调节方法,包括:异质同构、异质异构或反向形成、第三条道路等。而创新心理调节能力培养的途径有:发挥自主性、重视非智力因素、宽容的环境以及美德。本文介绍并剖析了创新在日常心理调节中的应用,揭示了它的培养途径。 相似文献
258.
Siyuan Guo Zhonghan Huang Yukang Yuan Ding‐Guo Gao 《Asian Journal of Social Psychology》2019,22(1):84-92
Sharing economy (SE) is a rapidly growing economic model which has brought people efficiency and convenience; however, it also provides users the opportunity to misbehave, which has raised public concerns about the moral crisis that it might cause. We examined the effect of SE on individuals’ unethical behaviors through four studies. We found consistently that making people believe that they were using shared goods (Study 1) or priming them with abstract SE mindsets (Studies 2–4) reduced, not facilitated, their subsequent cheating on task performances to gain monetary rewards. Moreover, the effect of SE on cheating was mediated by a sense of connecting to others (Study 4). Thinking of using SE enhanced individuals’ interpersonal closeness, which in turn led to less unethical behavior. However, correlational analyses in Studies 3 and 4 showed that people who cheated more in studies in the laboratory also reported using SE more frequently in real life. Implications of these findings are discussed. 相似文献
259.
禅修是一种能够对人类心理有广泛影响的训练工具。作为两种重要、相似但又不同的禅修方式, 冥想和正念对创造性思维中的发散思维和聚合思维产生了不同影响。在发散思维方面, 冥想主要通过对注意调控和无意识激活影响以及对解题动机和情绪的有效调控两方面显著增强了发散思维, 尤其是认知灵活性; 在聚合思维方面, 正念和冥想的影响相当复杂, 主要是通过聚合思维所需的执行功能和可能涉及表征重构来促进定势转移或功能固着的消除。就机制而言, 禅修对创造性思维的影响总体上不仅得益于走神时的无意识关联加工, 而且受禅修中诱发的情绪效应的调节。基于这些, 对未来研究的趋势进行了展望。 相似文献
260.