my study is about the effect of stress on donation behavior.

Using TSST for stress induction (+control task), a donation task with 80 charities (40 charities in the pre- and 40 charities in the post stress conditon) in which the Participants had the opportunity to donate between 0 and 20 Euro. Additionally Empathy, Compassion and Perspective taking was measured in the pre- and post stress condition. 43 Participants. Duration of 174 minutes.

Cortisol, pulse, and blood pressure was measured over the 5 time points as a measurement of stress reaction.

I want to find out if the intensity of the expression of empathy, mentalizing, and perspective taking(IV) has an moderating effect on donation sums(DV).

I would like to perform an ANCOVA with the post stress condition as the dependent variables. Do you think it is right?

I cant figure out how to place all these variables.

Stress and Control group (I am not sure if I should use this as a Fixed Factor)

Mean donation (pre-stress) (Covariate)

Mean donation (post-stress) (DV)

Mean Empathy (pre-stress)

Empathy-post (post-stress)

Perspective taking (pre-stress)

Perspective taking (post-stress)

Compassion (pre-stress)

Compassion (post-stress)

Should I use the pre- or the post-stress outcomes of empathy, compassion and perspective taking as further covariates?