The reliability and consistency of individual differences in motor control

Abstract

The Whipple steadiness test was given in a standing position to 97 students at the University of Minnesota, 10 trials each period in hole 8 with a maximum duration of 15 seconds. Test-retest reliability was .73 and odd-even reliability was .98. Means and sigmas for trials within a single period show little difference. Intercorrelations of trials indicate changes in relative position of individuals, but these changes have "no constant direction for the group as a whole." The changes appear to be greater as the time interval between trials is lengthened. (PsycInfo Database Record (c) 2025 APA, all rights reserved)