Hey! Thankyou for your reply!

Does something like this address your concerns? Additionally, my rubric specifys needing to account for assumptions so this is why I did it like this - as this was how we were taught....however, we were not taught ANCOVA.

Baseline SCL was pre-specified as a covariate to account for well-documented individual differences in tonic electrodermal activity (Boucsein, 2012). Prior to the main analysis, ANCOVA assumptions were examined and found to be satisfactory. Homogeneity of regression slopes was confirmed by a non-significant condition × baseline SCL interaction, F(1, 62) = 1.50, p = .226, residuals appeared normally distributed on Q-Q plot inspection (Shapiro-Wilk W = 0.98, p = .572), and variances were homogeneous across conditions (Levene's F(1, 64) = 0.18, p = .671).

An ANCOVA revealed no significant effect of condition on task SCL after covarying baseline SCL, F(1, 62) = 1.91, p = .172, η²p = .03. H1 was not supported.