112

 In sum, there were no differences in the percentages of

 responses greater than .02 micro sieman for the reward

 versus control trials or between groups. In general, there

 were no significant differences in subjects responses during

 block 1, 2, 3, and 4. Additionally, responses were greater,

 however, after no-reward trials compared to the reward

 trials during block 1. There were no differences in the

 amount of responding between the reward and no-reward for

 blocks 2, 3, and 4. There were also no group differences

 detected in SCR magnitude.

 Facial electromyography(EMG). Ipsilateral corrugator

 EMG (CEMG), left zygomatic EMG (ZGL), and right zygomatic

 EMG (ZGR) were analyzed separately. Repeated measures

 analyses of variance were employed. Group was the between

 subject factor (LHD, LH NCS, RHD, RH NCS), while block (one

 to four) and tone (high and low) were the within subject

 factors. There were no significant differences found for

 any of the facial muscle variables during reward condition.

 A means table reporting means for each variable by group is

 presented below. The three ANOVA tables, Tables C-48, C-49,

 and C-50, are presented in Appendix C. There were no

 significant main effects or interactions in the analyses of

 CEMG, ZGL, and ZGR. The ANOVAs were also employed using

 logarithmic transformations of the data. The transformed

data did not change the results in any way.