MaxDiff (maximum difference scaling) studies are an alternative to studies that use standard preference scales to determine the relative importance of items being rated. In a MaxDiff study, a respondent reports only the most and least preferred options from among a small set of choices. This forces respondents to rank options in terms of preference, which often results in rankings that are more definitive than rankings obtained using standard preference scales.
Figure 18.1 A MaxDiff Design Table

Help created on 7/12/2018