MEGA中国工作站:一次难得的机遇

我国马克思主义哲学界,尤其是马克思主义哲学史学界一直关注着MEGA,但往往对MEGA的特殊性理解得并不充分.MEGA是德文<马克思恩格斯全集>(Die Marx-Engels-Gesamtausgabe)的简称,它与我们通常所说的"<马克思恩格斯全集>"并不是同一个概念.我国已经出版的50卷<马克思恩格斯全集>第一版,正在编纂出版的第二版,以及苏联出版过的<马克思恩格斯全集>,确切地说应当称之为"马克思恩格斯著作",其相应的德文词为Die Marx-Engels-Werke,简称MEW.这方面比较权威的版本是民主德国从1956年至1983年出版的42卷<马克思恩格斯著作>,1990年补充出版了第43卷.     

A note on the Neyman-Johnson technique

A statistical problem which frequently arises in educational and psychological experimentation is that of testing the significance of the difference of the mean scores of two groups on some criterion variable, where the differential effects of one or more variables which are correlated with the criterion must be statistically eliminated. The usual analytical technique for this type of problem is the analysis of covariance (9). The Neyman-Johnson technique (7) provides another, and substantially different, approach. A computational procedure is suggested here which utilizes the advantages of both techniques without an undue increase in computational labor. In addition, the Neyman-Johnson technique is generalized to the case ofn predictor variables. Its application has heretofore been limited to a maximum of three predictor variables.This paper was written while the author was a Psychometric Fellow of the Educational Testing Service, Princeton, New Jersey.     

A note on the up-and-down method

Objections to the use of the original version of the up-and-down method in psychology, as exaggerating individual differences and yielding discrepant results, overlook statistical, psychometric, and logical factors. When the method is applied incorrectly, the standard error of SD is largeand apparent differences in estimates of SD are not statistically significant. Psychometrically, a singletrial procedure should give less reliable, hence more variable. PSEs than one using multiple trials. But this effect increases standard error of the mean. thus significant mean differences found with the method are not attributable to greater variability in PSEs. Explanations of discrepancies in results from up-and-down and traditional methods in the study of perceptual development fail to account for numerous similarities. Finally, a novel method ought to produce some novelty, if it is to make a contribution to psychology,     

A note on the minres method

This paper discusses the advantages and problems related to factor analysis by minimizing residuals (minres). It is shown that this method fails if the starting point of iterations is not well chosen. A suitable starting point is suggested.     

A note on reliability

A formula for internal consistency reliability is developed within the framework of the analysis of variance. The test items are assumed to be homogeneous, but may have any weights. Data needed for computation are the student test scores, and the total number of items answered so as to have the same weight. It is shown that this formula reduces to the Kuder-Richardson (21) for item weights of one and zero. Some empirical validation is offered.Social Security Board (on military leave.)