Hello,

I would like to remove a covariate of behavioral measures from a quadratic regression. Each subject has 8 blocks.
I'm a bit confused as to how set the -model.
If I have this script with 1st col = quadratic, 2nd = Covariate (de-meaned), should the I use -model 1 : 0 2 or -model 1 2 : 0
Again, just to be clear, I want to remove the effects of the covariate from the quadratic regression effects.

-xydata -7 -0.021 s1_special_20_Mod8X_A1-null+tlrc \
-xydata -1 -0.047 s1_special_20_Mod8X_A2-null+tlrc \
-xydata 3 -0.052 s1_special_20_Mod8X_A3-null+tlrc \
-xydata 5 -0.037 s1_special_20_Mod8X_A4-null+tlrc \
-xydata 5 -0.044 s1_special_20_Mod8X_A5-null+tlrc \
-xydata 3 -0.029 s1_special_20_Mod8X_A6-null+tlrc \
-xydata -1 -0.035 s1_special_20_Mod8X_A7-null+tlrc \
-xydata -7 -0.045 s1_special_20_Mod8X_A8-null+tlrc \
....
-xydata -7 -0.021 s20_special_20_Mod8X_A8-null+tlrc \
bucket 0 name


Thanks in advance for your help
pat