This article presents some equivalent forms of the common Kuder-Richardson Formula 21 and 20 estimators for nondichotomous data belonging to certain other exponential families, such as Poisson count data, exponential data, or geometric counts of trials until failure. Using the generalized framework of Foster (2020), an equation for the reliability…

An algorithm for updating the means of variances of a norm group after each computer-assisted administration of a test is described. The algorithm does not require storage of the whole data set, and provides for unlimited, continuous expansion of the test norms. (Author)

Although a great deal of attention has been devoted over a period of years to the estimation of reliability from item statistics, there are still gaps in the mathematical derivation of the Kuder-Richardson results. The main purpose of this paper is to fill some of these gaps, using language consistent with modern probability theory. (Author)

Eight asymptotically robust tests of population correlation coefficient equality are proposed and are studied along with two parametric tests. Monte Carlo simulation is used to compare the small sample performance of these ten procedures. The sampled distributions consist of the normal distribution, two mixed normal distributions and four…

This study investigates four widely used methods of collecting direct similarity judgments for nonmetric multidimensional scaling: rating scale, triads, rank order of pairs, and conditional rank order. (Author/PN)

A new test index is defined as the probability of obtaining two randomly selected test scores (PDTS) as statistically different. After giving a concept definition of the test index, two simulation studies are presented. The first analyzes the influence of the distribution of test scores, test reliability, and sample size on PDTS within classical…

Data from 2-, 3-, 6-, and 7-point rating scales were analyzed to determine whether scale length affected response patterns. Results indicate that data configurations are relatively invariant with changes in number of scale points. (Author)

The use of the kinesthetic aftereffect as a descriptive personality variable is strongly discouraged by the results of the present study. (Authors)

Study was designed to provide some indication as to whether the gain in test reliability from confidence scoring results from relevant or irrelevant sources. If the increase in reliability is the result of a gambling response style, it is conceivable that validity could actually decrease even though reliability is increased. (Authors/CB)

Paper analyzes additive variance in such a fashion that it supports both a theory of types and a cognitive-frustration theory of behavior in the development of tests designed to assess mental disturbance'' versus normality'' amongst college students. (Author)

Gumpgookies is an objective-projective test of motivation to achieve in school, intended for children in an age range of three and a half to eight or possibly nine. (Authors)

Three numerical coefficients for analyzing the validity and reliability of ratings are described. Each coefficient is computed as the ratio of an obtained to a maximum sum of differences in ratings. The coefficients are also applicable to the item analysis, agreement analysis, and cluster or factor analysis of rating-scale data. (Author/BW)

This article is an extension of the table of allocation averages devised by H. E. Brogden and presented in "Educational and Psychological Measurement" in 1959. The current table deals with up to 1000 jobs and rejection rates ranging from 0 to 90%. (Author/SLD)