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The five-factor model of personality – all we need?. Paul Deakin OPP Ltd BPS Division of Occupational Psychology Conference - Jan 2014. What we’ll be covering. Alternative models of personality: Trait vs Type Relationship between models Results from our research Discussion Q&A.
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The five-factor model of personality – all we need? Paul Deakin OPP Ltd BPS Division of Occupational Psychology Conference - Jan 2014
What we’ll be covering..... • Alternative models of personality: Trait vs Type • Relationship between models • Results from our research • Discussion • Q&A
Introduction • Research team led by Dr Walter Renner (Alpen-Adria-Universität Klagenfurt, Austria). Co-authors Jutta Menschik-Bendele & Rainer Alexandrowicz • Prevalent models of personality – Traits vs Type • Are these different models measuring the same thing?
McCrae & Costa (1989) Correlational analysis: **p<.01, *P<.05 Males n=267, Females n=201
Biderman et al (2012) Correlational analysis: ***p<.001 n=328
Objective Strong evidence that MBTI and FFM are correlated But Is it reasonable to conclude equivalence from this?
Methodology • Confirmatory factor analysis (CFA) to test three different models describing the relationships of the MBTI dimensions with four of the FFM traits • Sample: 435 psychology students (255 women and 180 men) • Measures: MBTI Step I questionnaire and NEO-FFI (both in German)
Model 1: two orthogonal factors Two orthogonal factors NEO E NEO Assumes that the respective MBTI and NEO-FFI scales would measure two uncorrelated latent factors for each pair of scales MBTI E MBTI
Model 2: two correlated factors Two correlated factors NEO E NEO Assumes that the respective MBTI and NEO-FFI scales would measure correlated, but distinct latent factors for each pair of scales MBTI E MBTI
Model 3: one common factor One common factor NEO Assumes that the respective MBTI and NEO-FFI scales would measure identical latent factors for each pair of scales E MBTI
Correlational results **p<.01, *P<.05 Females n=255, Males n=180 Results consistent with previous research
Confirmatory factor analysis results (1) Stage 1: CFA used to test unidimensionality of individual NEO-FFI and MBTI scales
Confirmatory factor analysis results (2) Results (for all scales): • Normed chi-square values ≤4.1 (but signif) • CFI & TLI mostly >.8 (all >.7), RMSEA & SRMR <.09 Acceptable fit with unidimensional models can be assumed. Notes: CFI = Comparative Fit Index TLI = Tucker Lewis Index RMSEA = Root Mean Square Error of Approximation SRMR = Standardised Root Mean Square Residual
Confirmatory factor analysis results (3) Stage 2: CFA used to test alleged equivalence of MBTI and NEO-FFI scales.
Confirmatory factor analysis results (4) Results (for all pairs): • Normed chi-square values ≤2 (but signif) • CFI & TLI .70 to .82 • RMSEA approx .05 • SRMR approx .06 For all four scale pairs, Model 2 shows best fit. Suggests distinct but correlated latent factors. Factors correlated at .61 to .79
Model showing best fit Two correlated factors NEO NEO .61 to .79 MBTI MBTI
Discussion • Alignment between NEO-FFI and MBTI dimensions? Yes • Identical? No. They are conceptually related but distinct. • Both instruments can add to the information provided by the other
Thank you! Any questions? Download slides from: www.opp.com/bps_dop_2014