we would like to conduct a dce on incentives. Question is: Of the following alternatives which would motivate you the most to join our program?
Alternative A: incentive_1a ($25 in cash), incentive_2a (toaster), incentive_3a (gift coupon for 2 cinema tickets)
Alternative B: incentive_1b ($35 in cash), incentive_2b (microwave), incentive_3b ( gift coupon for 1 cinema ticket)
Alternative C: I prefer not to join the program.
So there are 5 attributes (incentive_1, incentive_2 .... incentive_5) with 3 levels each.
But the point is alternatives are not really realistic. Future customer only get one incentive for enrolling the program.
And as every attribute actually belongs to one category (e.g. all levels like cash, kitchen tools, gift coupons could be part of only one attribute called incentives) probably better method in this case is best-worse case 2. However, we would like to use classic dce for comparison reasons.
Is it possible to perfom a dce with in fact only one attribute (incentives) spread over all alternatives and would we get reliable results?