3.3.1 Standard Error of Measurement
The SEMs for the STP (baseline-to-peak) approach ranged from M =
.44 (SD = .095) to M = .68 (SD = .132), with more
variability shown in the later components (see Table 9). The STW
approach ranged between M = .43 (SD = .094) and M =
.55 (SD = .117). Pearson’s correlations between the STP and the
STW approaches yielded very strong values at or above r = .93.
These data indicate that the SEMs were comparable for the STP and STW
approaches across participants.