U. Schroeders, Maximilian Morgenstern, K. Jankowsky, Timo Gnambs
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Short-Scale Construction Using Meta-Analytic Ant Colony Optimization
Abstract: The Need for Cognition Scale (NCS) is a self-report scale measuring individual differences in the tendency to engage in and enjoy thinking. The shortened version with 18 items (NCS-18; Cacioppo et al., 1984 ) has widely been administered in research on persuasion, critical thinking, and educational achievement. Whereas most studies advocated for essential uni-dimensionality, the question remains which psychometric model yields the best representation of the NCS-18. In the present study, we compared six competing measurement models for the NCS-18 with meta-analytic structural equation models using summary data of 87 samples ( N = 90,215). Results demonstrated that the negatively worded items introduced considerable measurement bias that was best accounted for with an acquiescence model. In a further analytical step, we showcased how the pooled correlation matrix can be used to compile short versions of the NCS-18 via Ant Colony Optimization. We examined model fit and reliability of short scales with varying item numbers (between 4 and 15) and a balanced ratio of positively and negatively worded items. We discuss the potentials and limits of the newly proposed method.
期刊介绍:
ACS Applied Electronic Materials is an interdisciplinary journal publishing original research covering all aspects of electronic materials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials science, engineering, optics, physics, and chemistry into important applications of electronic materials. Sample research topics that span the journal's scope are inorganic, organic, ionic and polymeric materials with properties that include conducting, semiconducting, superconducting, insulating, dielectric, magnetic, optoelectronic, piezoelectric, ferroelectric and thermoelectric.
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