A data analyst blind to group membership checked the electrodermal records for movement artifacts and eliminated
questionable responses using a custom written computer program (KIDCal; McIntosh, Miller, Shyu, & Hagerman, 1999;
Miller et al., 1999). Peak amplitude was measured from the point at which the skin conductance increased sharply (baseline)
to the point at which conductance began to fall (peak). Only peaks greater than 0.05mS and beginning between 0.8 and 5 s
post-stimulus were considered valid peaks