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. 2007 Jul-Sep;11(3):273–302.

Module 1: Peg Manipulation

Proficiency = 104.319 − 0.1309 Time − 2.5093 Errors

Variables Measured and Criterion Percentile Values
Variable 10 25 50 75 90
Time 143.0 135.5 83.0 54.0 47.0
Errors 1.2 1 0 0 0
Proficiency score 77.552 85.734 93.456 95.462 96.728

Means ± Standard Deviations for Each Variable
Variable −1.5 −1 0 +1 +1.5

Time 29.198 50.617 93.455 136.292 157.711
Errors −0.849 −0.366 0.6 1.566 2.049
Proficiency score 77.901 81.793 89.579 97.364 101.257