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Searching for G: A New Evaluation of SPM-LS Dimensionality

Searching for G: A New Evaluation of SPM-LS Dimensionality

Authors :
Garcia-Garzon, Eduardo
Abad, Francisco J.
Garrido, Luis E.
Source :
Journal of Intelligence. 2019 7.
Publication Year :
2019

Abstract

There has been increased interest in assessing the quality and usefulness of short versions of the Raven's Progressive Matrices. A recent proposal, composed of the last twelve matrices of the Standard Progressive Matrices (SPM-LS), has been depicted as a valid measure of "g." Nonetheless, the results provided in the initial validation questioned the assumption of essential unidimensionality for SPM-LS scores. We tested this hypothesis through two different statistical techniques. Firstly, we applied exploratory graph analysis to assess SPM-LS dimensionality. Secondly, exploratory bi-factor modelling was employed to understand the extent that potential specific factors represent significant sources of variance after a general factor has been considered. Results evidenced that if modelled appropriately, SPM-LS scores are essentially unidimensional, and that constitute a reliable measure of "g." However, an additional specific factor was systematically identified for the last six items of the test. The implications of such findings for future work on the SPM-LS are discussed.

Details

ISSN :
2079-3200
Volume :
7
Database :
ERIC
Journal :
Journal of Intelligence
Publication Type :
Academic Journal
Accession number :
EJ1356293
Document Type :
Journal Articles<br />Reports - Research