Same Traits, Different Variance

Jamie S. Churchyard, Karen J. Pine, Shivani Sharma and Ben (C) Fletcher

SAGE Open, 2014, vol. 4, issue 1, 2158244014522634

Abstract: Personality trait questionnaires are regularly used in individual differences research to examine personality scores between participants, although trait researchers tend to place little value on intra-individual variation in item ratings within a measured trait. The few studies that examine variability indices have not considered how they are related to a selection of psychological outcomes, so we recruited 160 participants (age M = 24.16, SD = 9.54) who completed the IPIP-HEXACO personality questionnaire and several outcome measures. Heterogenous within-subject differences in item ratings were found for every trait/facet measured, with measurement error that remained stable across the questionnaire. Within-subject standard deviations, calculated as measures of individual variation in specific item ratings within a trait/facet, were related to outcomes including life satisfaction and depression. This suggests these indices represent valid constructs of variability, and that researchers administering behavior statement trait questionnaires with outcome measures should also apply item-level variability indices.

Keywords: intra-individual variation; item-level variation; traitedness; HEXACO model; personality assessment (search for similar items in EconPapers)
Date: 2014
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Persistent link: https://EconPapers.repec.org/RePEc:sae:sagope:v:4:y:2014:i:1:p:2158244014522634

DOI: 10.1177/2158244014522634

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