Abstract
Abstract: Despite the importance of assessing the reliability of evaluative measures, there is a confusing array of conceptual schemes and coefficients for calculating “the reliability” of an item or scale. In particular, reliability may be conceived of and estimated from a true-score model or a sampling precision perspective. The former model is associated with such estimates as parallel or alternate forms reliability, split-half reliability, and coefficient alpha, the latter with standard error, coefficient of variation, and confidence intervals for observed scores. This review clarifies the distinction between two models. The basic theoretical models for each approach are developed and illustrated using data from the author's work on measuring organizational climate. As a result, evaluators should be better able to judge the meaning of the reliability information provided in reports and to calculate reliability in situations requiring some assessment of the quality of their data.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
