The method of constant stimuli with three rating categories and the use of Rasch models

TL;DR: In this paper, a study on the relationship between the Big Five of personality and job performance was carried out by surveying workers and employees' perception on the matter instead of passing through the computation of possibly faked (and biased) correlation coefficients between them.

TL;DR: Whether opposite judgments of height, size, width and length (high/low, large/small, wide/narrow, and long/short) imply underlying unidimensional continua imply a possible explanation for the lack of unidimensionality is looked at.

TL;DR: In this article, the authors present a critical review of what psychological science has found, and not so recently, in the field of assessment and development of psychological characteristics, in terms of risks and biases.

TL;DR: The aim of this study is to show that Experimental Phenomenology can lead to conclusions objective and quantifiable and propose a procedure allowing to obtain objective measuring using the Rasch mathematical model able to describe the experimental data gathered in Experimental phenomenology procedures.

Abstract: This is a reprint of the orginal book released in 1968. Our primary goal in this book is to sharpen the skill, sophistication, and in- tuition of the reader in the interpretation of mental test data, and in the construction and use of mental tests both as instruments of psychological theory and as tools in the practical problems of selection, evaluation, and guidance. We seek to do this by exposing the reader to some psychologically meaningful statistical theories of mental test scores. Although this book is organized in terms of test-score theories and models, the practical applications and limitations of each model studied receive substantial emphasis, and these discussions are presented in as nontechnical a manner as we have found possible. Since this book catalogues a host of test theory models and formulas, it may serve as a reference handbook. Also, for a limited group of specialists, this book aims to provide a more rigorous foundation for further theoretical research than has heretofore been available.One aim of this book is to present statements of the assumptions, together with derivations of the implications, of a selected group of statistical models that the authors believe to be useful as guides in the practices of test construction and utilization. With few exceptions we have given a complete proof for each major result presented in the book. In many cases these proofs are simpler, more complete, and more illuminating than those originally offered. When we have omitted proofs or parts of proofs, we have generally provided a reference containing the omitted argument. We have left some proofs as exercises for the reader, but only when the general method of proof has already been demonstrated. At times we have proved only special cases of more generally stated theorems, when the general proof affords no additional insight into the problem and yet is substantially more complex mathematically.

TL;DR: In this paper, an unidimensional latent trait model for responses scored in two or more ordered categories is developed, which can be viewed as an extension of Andrich's Rating Scale model to situations in which ordered response alternatives are free to vary in number and structure from item to item.

TL;DR: In this article, the essential character of simultaneous conjoint measurement is described by an axiomatization for the comparision of effects of (or responses to) pairs formed from two specified kinds of "quantities".

TL;DR: The Rasch measurement model provides the necessary and sufficient means to transform ordinal counts into linear measures and is being successfully applied to rating scales.