A procedure for rapid screening of variables as potential moderators is presented and discussed. A moderator is defined as any variable which can be used to identify differentially predictable persons; or defined statistically by stating that if a predictor and a moderator are each divided into three or more categories and used as independent…

ALL TERMS IN CONTEMPORARY AMERICAN ENGLISH WHICH PERTAIN TO ASPECTS OF HUMAN BEHAVIOR OR PERSONAL CHARACTERISTICS WERE ASSEMBLED FROM AVAILABLE LEXICONS. THESE TERMS WERE CATEGORIZED INTO 15 RUBRICS ON THE BASIS OF JUDGMENTS OF THEIR FAMILIARITY, SPECIFICITY, AND CERTAIN BROAD SEMANTIC CRITERIA. SOME 2,800 TERMS WERE IDENTIFIED WHICH SEEMINGLY…

Statistical procedures employed in item analysis are based on the performance of the individual on a given test. If, however, one desires to assess the efficiency of some treatment, the researcher is interested in the performance of groups of students who received the treatment rather than in the performance of any one individual. In such cases…

To compare the means, reliability coefficients, and concurrent validity coefficients for four tests, two with and two without optional items; and to determine if pupils could select items that would improve their scores, 210 seventh grade pupils were first administered the seventh grade spelling subtest of the Iowa Tests of Basic Skills. They were…

Computers have been used successfully in test assembly following the cooperation of test specialists and computer specialists in systematic analyses of the test-assembly process. Systematic exploration of the item-writing process may well make it possible for the computer to take on some of the less creative portions of item writing. The current…

Fifty-eight undergraduate and graduate student volunteers participated in a factorial experiment designed to test hypotheses about the effects of two levels of information organization and four types of adjunct prequestion treatments on performance on specific amount items and two types of items organized in the same manner as the graphical…

Three tests of intellectual performance capacity referring to factors V, S, and R, according to Thurstone's system of primary mental abilities were administered to a total number of 34 subjects. Immediately after finishing an individual item, subjects were asked to estimate the perceived difficulty of that item. The ratings were to be given on a…

A scale was developed for judging the relative value of various media in teaching children. Posttest scores were partitioned into several components: error, prior knowledge, guessing, and gain from the learning exercise. By estimating the amounts of prior knowledge, guessing, and error, and then subtracting these from the total score, an index of…

This bibliography is a list of theoretical and empirical studies of the Rasch One Parameter Logistic Measurement Model. A total of 96 entries are included. (KM)

The stability of various item discrimination indices when a particular item assumes membership within different sets of items was investigated. Results suggest that when item discrimination is used as a significant factor in determing which items from several forms will be selected for inclusion in a test, the actual items selected are less a…

A discussion of criterion-referenced measures is presented. Two characteristics define the criterion-referenced measure: the presence of a performance criterion, and test items keyed to a set of behavioral objectives. The performance criterion, in an educational setting, is usually a relative standard of performance. There are two ways of…

Using ordering theory, a boolean algebraic measurement model in which item response patterns are viewed as atoms in a boolean algebra with as many generators as there are items being considered, a hierarchy-generative procedure is developed. This procedure relates to the determination of prerequisite relationships between pairs of items. An…

Content validity is concerned with three components: (1) the job content; (2) the test content, and (3) the strength of the relationship between the two. A content validation study, to be considered adequate and defensible should include at least the following four procedures: (1) A thorough and accurate job analysis (to define the job content);…

One of the most important contentions of the Rasch model of item analysis is that two tests of the same trait, having some items in common, can be linked together using a "linking constant" derived from the common items. This would be accomplished by administering both tests to a sample of testees, calibrating the items of the tests…

Two procedures for the display of item analysis statistics are described. One procedure allows for investigation of difficulty; the second plots item difficulty against item discrimination. (Author/JKS)