MaxDiff is an approach for obtaining preference/importance scores for multiple items (brand preferences, brand images, product features, advertising claims, etc.). Although MaxDiff shares much in common with conjoint analysis, it is easier to use and applicable to a wider variety of research situations. MaxDiff is also known as “best-worst scaling.” We offer MaxDiff/Web for computer-based interviewing and it is a component within our SSI Web suite of tools. It includes all the functionality for designing, fielding, and analyzing your MaxDiff data.

MaxDiff/Web Specifications

• Two system sizes to choose from: up to 30 items / up to 500 items
• Two methods of analysis: counting analysis; score estimation based on hierarchical Bayes (HB)
• Web-based or CAPI interviewing (computers not connected to the Internet)
• Includes comprehensive manual, with tutorial and examples

System Requirements

SSI Web requires Windows XP or later.

Server Requirements

For web-based data collection, the software works on any Windows or Unix (Linux) based server platform that supports Perl scripts (including inexpensive shared hosting solutions).