99
lower percentage of responses compared to the CONS or RHD
groups. See Table C-22 in Appendix C.
The main effect for condition indicated that subjects
had a greater percentage of SCR responses during the shock
(mean=30.31%, sd=31.00) compared to the no-shock condition
(mean=19.79, sd=25.43).
The condition by group interaction was explored using
independent t-tests with Bonferroni corrections. Groups
were compared to one another for both the shock and no-shock
conditions. Since there were no significant differences
between the two control groups during both the shock
condition [T(l,22) = -1.375, P = .1830] and the no-shock
condition [T(l,22) = -1.236, P = .2296], the LH NCS and RH
NCS were combined into one group. There were three
comparisons for each tone, the bonferroni correction changed
the significance level to .05/3=.017. Examination of the
group difference during the shock condition revealed that
the RHD group (mean=15.00%, sd=16.88) had a lower number of
responses above .02 micro sieman compared to the CONS
(mean=44.17%, sd=33.27), [T(33) = 2.734, P <.017], The LHD
group (mean=16.25%, sd=23.94) also had fewer responses than
the CONS [T(22) = -2.532, P <.017). Additionally, no
significant group differences were found in percent of
responding during the no-shock trials. The results of the
t-tests are presented fully in Tables C-23 and C-24 in
Appendix C.