235 Table C-69 ANCOVA Table of Percentage of SCR Responses during the Shock Task with Medication as a Covariate SS DF SS F Sig of F Within and Residual (Group) 55258.1 3 42 1315.67 Regression 544.14 1 544.14 .41 . 524 Group 8057.17 3 2685.72 2.04 . 123 Within and Residual (Tone) 3614.77 43 84.06 Tone 2481.89 1 2481.89 29.52 . 000 Tone by Group 1630.97 3 543.66 6.47 . 001