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1 results

  • Rotational Uniqueness Conditions Under Oblique Factor Correlation Metric

  • Carel F. W. Peeters
  • Journal:
    Psychometrika / Volume 77 / Issue 2 / April 2012
    Published online by Cambridge University Press:
    01 January 2025, pp. 288-292

  • In an addendum to his seminal 1969 article Jöreskog stated two sets of conditions for rotational identification of the oblique factor solution under utilization of fixed zero elements in the factor loadings matrix (Jöreskog in Advances in factor analysis and structural equation models, pp. 40–43, 1979). These condition sets, formulated under factor correlation and factor covariance metrics, respectively, were claimed to be equivalent and to lead to global rotational uniqueness of the factor solution. It is shown here that the conditions for the oblique factor correlation structure need to be amended for global rotational uniqueness, and, hence, that the condition sets are not equivalent in terms of unicity of the solution.