Journal article

Dimensions over categories: a meta-analysis of taxometric research

Nick Haslam, Melanie J McGrath, Wolfgang Viechtbauer, Peter Kuppens

Psychological Medicine | CAMBRIDGE UNIV PRESS | Published : 2020


Taxometric procedures have been used extensively to investigate whether individual differences in personality and psychopathology are latently dimensional or categorical ('taxonic'). We report the first meta-analysis of taxometric research, examining 317 findings drawn from 183 articles that employed an index of the comparative fit of observed data to dimensional and taxonic data simulations. Findings supporting dimensional models outnumbered those supporting taxonic models five to one. There were systematic differences among 17 construct domains in support for the two models, but psychopathology was no more likely to generate taxonic findings than normal variation (i.e. individual differenc..

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