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Sawtooth MaxDiff Designs

your MaxDiff designs (from SSI Web or MaxDiff designer) always look very well balanced - across both single items and pairs. Are these BIBD designs (Balanced Incomplete Block Designs)? Or do they just look like one?
asked Apr 21, 2014 by Dimitri Bronze (645 points)

1 Answer

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Our designs are not necessarily BIBD designs, no.  They are much more general than BIBD designs [as you are probably aware, BIBD designs do not necessarily exist for all combinations of (a) total number of items, (b) number of items per set and (c)  number of sets.]  

Our designs at least look like BIBDs, and often they're better because they work when no BIBD for a given a, b and c above exists.
answered Apr 21, 2014 by Keith Chrzan Platinum Sawtooth Software, Inc. (65,925 points)
Thank you, Keith!