As for the expected effectiveness at treating a headache, the participants were asked to arrange the tablets in order of how effective each would be in terms of eliminating the symptoms of a headache (‘‘not at all’’ and ‘‘very much’’).
As for the expected effectiveness at treating a headache,the participants were asked to arrange the tablets in order ofhow effective each would be in terms of eliminating the symptomsof a headache (‘‘not at all’’ and ‘‘very much’’).