Table 2. RT and accuracy data from the fMRI sessions
Posthypnotic suggestion congruency RT (SD), msec Accuracy (SD), %
Highly hypnotizable
    Absent
        Congruent 725 (157) 98.2 (13.4)
        Incongruent 865 (245) 93.0 (25.6)
        Neutral 755 (176) 97.7 (15.1)
    Present
        Congruent 685 (163) 94.3 (23.3)
        Incongruent 721 (230) 93.2 (25.2)
        Neutral 718 (192) 94.8 (22.2)
Less-hypnotizable
    Absent
        Congruent 861 (220) 98.2 (13.4)
        Incongruent 933 (252) 96.1 (19.4)
        Neutral 854 (196) 96.6 (18.1)
    Present
        Congruent 809 (207) 97.1 (16.7)
        Incongruent 860 (210) 95.1 (21.7)
        Neutral 807 (200) 97.4 (15.9)
  • Significant RT main effects (P < 0.005) and interactions (P < 0.01) were calculated for Group, Suggestion, Congruency, Group × Congruency and Suggestion × Congruency. A main effect for Congruency (P < 0.05) was the only significant result obtained for accuracy. Although suggestion removed RT interference (i.e., incongruent minus neutral) and reduced conflict (i.e., incongruent minus congruent) for the highly hypnotizable persons, it affected neither for the less-hypnotizable individuals.