The effects of test setting (home vs classroom) on the sensorimotor performance of 7 Down's syndrome infants were examined. The 7 Uzgiris-Hunt scales were administered on 10 occasions over a 4-mo. period, yielding 5 home-classroom comparisons for each subject. Analyses of mean performance scores, intersetting test-retest reliability, and intrasetting stability indicated that test performance was minimally affected by test setting, but that intrasetting interindividual invariance in performance was less stable when the subjects were tested in a classroom environment.
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