114
reward and control trials. See Table C-51 in Appendix C for
details.
In sum, overall subjects reported greater pleasure,
arousal, and dominance during the reward compared to the
control trials. Additionally, none of the groups differed
in their ratings during the reward or control trials.
Shock versus reward
In order to directly compare the change in emotional
experience between the two stimulus and control conditions,
the no-shock and no-reward control conditions were
subtracted from their respective stimulus conditions. Thus,
a new variable was created for each variable by subtracting
the value during the shock condition from the value during
the no-shock condition. Similar variables were created by
subtracting the no-reward condition from the reward
condition. These new variables were created in order to
directly compare the change in each dependent variable
between the stimulus and control condition in the shock task
with the change between the stimulus and control condition
in the reward task.
Heart rate. As mentioned above, overall heart rate
along with Dl, A1, and D2 were examined separately. Also,
as in the heart rate analyses reported above, one subject
was excluded from the LH NC group due to unusually high and
variable heart rate change scores.