Table 2.

Changes in speech performance following PROMPT therapy

Measure	Magnitude of mean difference	Within-subjects t-test
GFTA-2 sounds-in-words—raw score	9.1	t(11) = 3.6, p = 0.004
HCAPP Phonological deviations—total	39.7	t(11) = 7.3, p ≤ 0.001
VMPAC focal motor control—% correct	11.5	t(11) = 3.7, p = 0.004
VMPAC sequencing—% correct	7.7	t(11) = 3.1, p = 0.010

GFTA Goldman Fristoe test of articulation, VMPAC Verbal motor production assessment for children, HCAPP Hodson computerized analysis of phonological patterns