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Table 12 Eigenvalues of Mini-PANSS subscales (without rotation)

From: Use of NON-PARAMETRIC Item Response Theory to develop a shortened version of the Positive and Negative Syndrome Scale (PANSS)

PANSS Subscale Component 1 Eigenvalue Component 2 Eigenvalue Ratio of Eigenvalues Unidimensionality assumed
Positive Symptoms 2.920 .798 3.659 Yes
Negative Symptoms 3.628 .784 4.628 Yes
General Psychopathology 3.332 1.109 3.005 Yes
  1. Note. Ratio of Eigenvalues is computed by dividing the eigenvalues for the first component by the eigenvalues for the second component. Unidimensionality assumed, is based on the eigenvalue of Component 1 being at least three times larger than the eigenvalue for Component 2 (as presented in the column titled 'Ratio of Eigenvalues')