Onaverage,
all participants in the intervention group improved,
comparedwiththecontrols,but theamountofimprovement
was dependent on their baseline measurement. Resulting
from this preliminary descriptive analysis, we decided to
evaluate the effect of the experimental intervention by estimating
the proportional increase in beads drawn (expressed
as a ratio of beads drawn in the experimental condition over
the number of beads drawn by the controls), assuming that