One of the major assumptions of latent trait theory is that the items in a test measure a single dimension. This report describes an investigation of procedures for forming a set of items that meet this assumption. Factor analysis, nonmetric multidimensional scaling, cluster analysis and latent trait analysis were applied to simulated and real…

Judgments that favorably set an individual apart from others tend to be made more rapidly, suggesting that the self-concept is both an effective and a cognitive entity. Subjects rated the self-applicability of traits on a 100-point scale. As in other studies using dichotomous judgements, judgement speed increased with increasing self-applicability…

Patterns of cautiousness in a prose learning task were examined in three age groups of adults representing three levels of educational experience. Types of instruction, order of material presentation, sex, and educational experience level were varied for all groups of the 90 adults participating in the study. The main findings were as follows: (1)…

The Comprehensive Test of Basic Skills (CTBS) was administered to over 200 third graders to investigate the effects of using consumable test booklets versus non-consumable booklets which require a separate answer sheet. It was hypothesized that there would be no significant differences in CTBS scores between students using consumable booklets and…

Questions are raised about the time within a test administration period that may be available for review for those candidates who have time enough, or more than enough, to finish. The assumption is proposed that rate of work may be normally distributed. The rate of work for those who have finished a test cannot be determined from their answer…

A specially designed answer format was used for three tests in a college level agriculture class of 19 students to record responses to three things about each item: (1) the student's choice of the best answer; (2) the degree of certainty with which the answer was chosen; and (3) all the answer choices which the student was certain were incorrect.…

The question of whether test factor structure is indicative of the test item hierarchy was examined. Data from 1,000 subjects on two sets of five bivalued Law School Admission Test items, which were analyzed with latent trait methods of Bock and Lieberman and of Christoffersson in Psychometrika, were analyzed with an ordering-theoretic method to…

This report describes an automated system for administering, scoring, and recording results of multiple-choice tests. The system consists of examinee station, proctor station, and central computer; the report describes the equipment and the programing characteristics of the respective components. The system is designed for tests tailored to the…

This paper explores the effects of item choice on ability estimation when using a tailored testing procedure based on the Rasch simple logistic model. Most studies of the simple logistic model imply that ability estimates are totally independent of the items used, regardless of the testing procedure. This paper shows that the ability estimate is…

In latent trait models the standard procedure for handling the problem caused by guessing on multiple choice tests is to estimate a parameter which is intended to measure the "guessingness" inherent in an item. Birnbaum's three parameter model, which handles guessing in this manner, ignores individual differences in guessing tendency. This paper…

A study was made to determine the reliability of subjective adult judgement in the selection of films for primary educable mentally handicapped (EMH) children. A selection of five films, all prerated according to standardized techniques and designated appropriate for primary level students, were presented for viewing by a primary class of…

An application of the two-paramenter logistic (Rasch) model to tailored testing is presented. The model is discussed along with the maximum likelihood estimation of the ability parameters given the response pattern and easiness parameter estimates for the items. The technique has been programmed for use with an interactive computer terminal. Use…

The post mortem item-examinee sampling investigation described herein explored the feasibility of using item-examinee sampling to estimate scale values denoting degree of affect toward stimuli when measured by the method of paired-comparisons. Results indicate clearly that such scale values can be approximated satisfactorily through item-examinee…

Following up on an earlier study which found that blacks and whites differed significantly on a 54-item development scale designed to measure effective individual functioning, or "maturity," this report considers whether the content of the Psychosocial Maturity Scale (PSM) is biased in favor of white children and if this bias invalidates…

The effects of immediate knowledge of results (KR) concerning the correctness or incorrectness of each item response on a computer-administered test of verbal ability were investigated. The effects of KR were examined on a 50-item conventional test and a stradaptive ability test and in high- and low-ability groups. The primary dependent variable…