ACBC can be used to study up to:
•250 levels per attribute
•Unlimited number of respondents
Typical studies in practice will cover about 5 to 12 attributes, with about 2 to 6 levels per attribute. However, because the attribute list can be "constructed" (customized) for each respondent, it is possible to study many more attributes and many more levels per attribute (for example, levels of "brand") than would be prudent using traditional full-profile conjoint methods. But whenever omitting attributes and levels from a respondent's design, some assumptions must be made, and we recommend the user carefully review the section entitled: Customized (Constructed) Attribute and Level Lists.