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Table 3 Variance component results of a 29 participants, two judges and three Medical Judgment Vignettes stations

From: A generalizability study of the medical judgment vignettes interview to assess students' noncognitive attributes for medical school

Source of Variation df Mean Squares Variance Component Variance Explained
Participants ( p ) 28 6.597 0.765 41.69
Judges ( j ) 1 0.508 0.003 0.16
MJV Stations ( s ) 2 0.089 -0.031 0.00
   p × j 28 0.118 -0.002 0.00
   p × s 56 2.001 0.938 51.12
   j × s 2 0.227 0.004 0.22
   pjs, e 56 0.125 0.125 6.81
Total     100.00
  1. Note: negative variance component estimates may occur – in this present study, the reason for their occurrence is that the true value of the variance equals zero.