I am facing a challenge when interpreting the results of my CBC study. The study relies on conditional pricing (price is defined by two discrete attributes and also varies in a -30% - +30% interval). I am computing individual utilities using CBC/HB (price is simulated as linear attribute, as described here: https://sawtoothsoftware.com/forum/798/conditional-pricing-in-hb?show=798#q798),
then the results are processed through SMRT to get the zero-centered utilities.
My question are as follows:
1/ Should I include interactions between attributes in my HB analysis to reflect the conditional pricing? Or is it not recommended / relevant?
2/ If yes, do I need to include the interaction when calculating the relative importance of each attribute (using utility range, as mentioned here: https://sawtoothsoftware.com/forum/5872/simulating-interaction-between-categorical-linear-variable)?
Many thanks in advance for your help,