Chunk #35 — Results — Appropriateness of Item Response Theory to harmonize Neuroticism and Extraversion scores

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Harmonization of Neuroticism and Extraversion phenotypes across inventories and cohorts in the Genetics of Personality Consortium: an application of Item Response Theory.

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(0.03)0.690.40 (0.03)0.395. ERF−0.28 (0.02)0.380.06 (0.03)0.236. EGCUT−0.16 (0.03)0.370.04 (0.04)0.117. FINNISH TWINS−0.41 (0.04)0.740.34 (0.03)0.418. HBCS−0.59 (0.04)0.650.13 (0.06)0.3711. LBC1936−0.77 (0.04)1.100.25 (0.03)0.5014. NESDA0.05 (0.04)1.120.03 (0.03)0.6215. NTR−0.69 (0.04)0.880.57 (0.03)0.5517. PAGES−1.02 (0.05)0.740.28 (0.07)0.5018. QIMR adolescents−0.11 (0.03)0.600.68 (0.03)0.4919. QIMR adults−0.43 (0.03)0.810.36 (0.03)0.4023. YOUNG FINNS−0.73 (0.04)1.240.50 (0.03)0.61Overall average−0.47 (0.09)0.12a 0.28 (0.07)0.07a aBetween cohort variance Table 4Estimated means and variances of IRT-based Neuroticism and Extraversion latent scores based on EPQ-R item data, after taking into account measurement non-invariance across cohortsNeuroticismExtraversionCohortMean (SE)VarianceMean (SE)Variance9. Korcula−0.55 (0.06)2.281.41 (0.07)2.1013. NBS−1.33 (0.07)2.940.60 (0.07)3.5216. ORCADES−1.47 (0.08)2.560.36 (0.08)3.1019. QIMR adults−0.72 (0.06)2.350.76 (0.07)4.1222. VIS−0.33 (0.06)2.221.10 (0.06)2.02Overall average−0.83 (0.23)0.30a 0.82 (0.21)0.23a aBetween cohort variance