An exemplary method for determining a singular impact of a base criterion includes selecting the base criterion and a trade criterion from a plurality of criteria and selecting a starting alternative and a target alternative. A series of virtual alternatives are then created, initially based on the starting alternative, by sequentially eliminating an impact of each non-selected criteria from the plurality of criteria. A final virtual alternative is compared to the target alternative and the singular impact of the base criterion is determined based on a difference between the final virtual alternative and the target alternative.