Assessment of a practice effect in serial sensory organization testing scores of healthy adults

Terry L. Grindstaff, Katherine E.J. Christiano, Allison M. Broos, Dawn A. Straub, Nancy S. Darr, Kathleen A. Westphal

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


This study assessed whether a practice effect occurs across five serial administrations of the sensory organization test. Composite equilibrium scores and mean equilibrium scores from 30 healthy volunteers (M age = 36.9, SD = 12.2 yr.) performing each of the six test conditions were examined using a two-way repeated-measures analysis of variance. Analysis yielded a significant interaction between testing condition and time, as well as significant main effects for both condition and time. Pairwise comparisons showed significant differences among test conditions and the first and second times of test administration. Analysis of simple effects between the two administrations identified significant increases in composite equilibrium scores and mean equilibrium scores on two sway-referenced support surface conditions, vision removed and sway-referenced visual surround. An immediate increase in equilibrium scores suggests clinicians and researchers allow one pracatice trial before recording test scores for baseline measurements.

Original languageEnglish (US)
Pages (from-to)379-386
Number of pages8
JournalPerceptual and Motor Skills
Issue number2
StatePublished - Apr 2006
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Experimental and Cognitive Psychology
  • Sensory Systems


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