Erroneous generalization-Exploring random error variance in reliability generalizations of psychological measurements.

IF 7.6 1区 心理学 Q1 PSYCHOLOGY, MULTIDISCIPLINARY
Lukas J Beinhauer, Jens H Fünderich, Frank Renkewitz
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引用次数: 0

Abstract

Reliability generalization (RG) studies frequently interpret meta-analytic heterogeneity in score reliability as evidence of differences in an instrument's measurement quality across administrations. However, such interpretations ignore the fact that, under classical test theory, score reliability depends on two parameters: true score variance and error score variance. True score variance refers to the actual variation in the trait we aim to measure, while error score variance refers to nonsystematic variation arising in the observed, manifest variable. If the error score variance remains constant, variations in true score variance can result in heterogeneity in reliability coefficients. While this argument is not new, we argue that current approaches to addressing this issue in the RG literature are insufficient. Instead, we propose enriching an RG study with Boot-Err: Explicitly modeling the error score variance using bootstrapping and meta-analytic techniques. Through a comprehensive simulation scheme, we demonstrate that score reliability can vary while the measuring quality remains unaffected. The simulation also illustrates how explicitly modeling error score variances may improve inferences concerning random measurement error and under which conditions such enhancements occur. Furthermore, using openly available direct replication data, we show how explicitly modeling error score variance allows for an assessment to what extent measurement quality can be described as identical across administration sites. (PsycInfo Database Record (c) 2025 APA, all rights reserved).

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来源期刊
Psychological methods
Psychological methods PSYCHOLOGY, MULTIDISCIPLINARY-
CiteScore
13.10
自引率
7.10%
发文量
159
期刊介绍: Psychological Methods is devoted to the development and dissemination of methods for collecting, analyzing, understanding, and interpreting psychological data. Its purpose is the dissemination of innovations in research design, measurement, methodology, and quantitative and qualitative analysis to the psychological community; its further purpose is to promote effective communication about related substantive and methodological issues. The audience is expected to be diverse and to include those who develop new procedures, those who are responsible for undergraduate and graduate training in design, measurement, and statistics, as well as those who employ those procedures in research.
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