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. Author manuscript; available in PMC: 2014 May 21.
Published in final edited form as: Psychol Methods. 2009 Dec;14(4):400–412. doi: 10.1037/a0016618

Table 1. Youth Self Report (YSR) Scale Score Reliability Estimates Using the Simplex Model and Cronbach’s α.

Model Wave 1 Wave 2 Wave 3
Simplex Model
 Stationary Error Variance 0.77 0.71 0.67
 Stationary True Score Variance 0.57 0.71 0.81
Cronbach’s α 0.96 0.95 0.95