207 Table C-38 T-Tests of Group Differences in Block 1 of Left-sided Zygomatic EMG during the Shock Task Group Mean Diff. DF T-Value P-Value LHD, LH NCS - 060 22 -2.264 . 0338 LHD, RHD - 067 22 -2.091 . 0483 LHD, RH NCS - 072 22 -2.451 . 0227 LH NCS, RHD - 007 22 - .288 . 7763 LH NCS, RH NCS - 012 22 - 557 . 5829 RHD, RH NCS - 004 22 - 164 . 8713