Sawtooth Software: The Survey Software of Choice

Sawtooth Solutions #8: 1998 Fall

On Interaction Effects and CBC Designs

It is easy and automatic to get efficient designs using the CBC System. As long as you do not specify any prohibitions, CBC's randomized designs are near-orthogonal, providing near-optimal efficiency for measuring main effects. However, CBC version 1's design strategies (Complete Enumeration and Shortcut Method) are often not as efficient as they might be for measuring interactions.

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