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Variance Component for Participant / (Variance Component for Participant) + (Variance Component of Residual). Variance Component for Participant /
 [(Variance Component for Participant) + (Variance Component of Residual)]

Using an intraclass correlation to measure consistency across subjects

Fit a multilevel model 

MIXED Y 
  /FIXED=  | SSTYPE(3)
  /METHOD=REML
  /PRINT=SOLUTION
  /RANDOM=intercept | SUBJECT(participant) COVTYPE(VC).

The intraclass correlation which measures the consistency of performance across version of the participants equals 

Variance Component for Participant / 
 [(Variance Component for Participant) + (Variance Component of Residual)]

This can also be computed from a one way repeated ANOVA if there are the same number of repetitions (e.g. time) per participant.

None: FAQ/multiicc (last edited 2018-03-22 15:06:21 by PeterWatson)