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1 results

  • Comparing Latent Distributions

  • Erling B. Andersen
  • Journal:
    Psychometrika / Volume 45 / Issue 1 / March 1980
    Published online by Cambridge University Press:
    01 January 2025, pp. 121-134

  • We consider the problem of comparing m latent population distributions when the observed values are scores on a test battery with binary items. The latent densities are assumed to be normal densities, and we consider a test for equality of the means as well as a test equality of the variances. In addition, we consider a longitudinal model, where the test battery has been applied to the same individuals at different points in time. This model allows for correlations between the latent variable at different time points, and methods are discussed for estimating the correlation coefficient.