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anchored max diff possible to split items in responent groups?

With the anchored maxDiff, is it possible to run a max diff with let’s say 80 items and splitting the sample into two (item 1-40 first groups of respondents, items 41-80 second group) and then get the importance ranking for item 1 to 80?

I would expect with this approach segmenting the respondents would not work as we don’t get individual level scores for all 80 statements ?

Is there another way to split items and merge them afterwards to geht the whole picture?
asked Jul 15, 2013 by anonymous
retagged Jul 15, 2013 by Walter Williams

1 Answer

0 votes
It seems you are thinking about using the "Anchor" item as a bridge to link two separate sets of items from two separate MaxDiff studies.  Market segmentation wouldn't work, as you've indicated.  

I used a similar methodology to test the validity of the anchor item (dividing the items into two separate sets and trying to bridge them together using the anchor item...see a white paper at: https://www.sawtoothsoftware.com/download/techpap/dualresponsemaxdiff.pdf)

I did this split-study design to test the validity of the anchor item, but I wouldn't recommend it as a way to bridge multiple groups of items together (divide and conquer) across respondents.  Better idea would be to use "Sparse MaxDiff" or "Express MaxDiff" as described by Wirth/Wolfrath in their 2012 Sawtooth Software paper that may be downloaded from: www.sawtoothsoftware.com/download/techpap/2012Proceedings.pdf
answered Jul 17, 2013 by Bryan Orme Platinum Sawtooth Software, Inc. (132,290 points)
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