only show a few levels in the conjoint-task

Question

Hallo.
I have created a CBC-Design with 10 attributes. One of these attributes is price with 12 levels.  
My question: Is it possible, that according to the answers of the respondents the give to question 1 (which garden size they have: 500m², 1000m², 1500m², 2000m²), the only see the 3 corresponding price levels (of the 12) in the conjoint-task?
I hope it is clear, what i mean.
thanks a lot

Answer 1

as far as I know that is not possible in CBC. I've devised a way to prevent the respondents SELECTING a task based on previous answers like "purchase intent". You could take that approach and hide that task altogether, but that might make the screen look bad / unbalanced. Let me know if this sounds like it may work for you.

Answer 2

I think you could make the price attribute have only 3 levels (low, medium, high) and use Perl to show the price you want according to the answer at Q1. So at the first level you would use something like this:

[%Begin Unverified Perl

if ("VALUE"Q1")==1) { return "$10" ; }
if ("VALUE"Q1")==2) { return "$15" ; }
if ("VALUE"Q1")==3) { return "$20" ; }
if ("VALUE"Q1")==4) { return "$50" ; }

End Unverified

I don't know how this might impact your conjoint analysis but I would venture to say it will work just fine.

Answer 3

I would recommend reading a paper on our website at http://www.sawtoothsoftware.com/download/techpap/price3ways.pdf.  It covers a few ways to treat price in a conjoint analysis exercise.  The conditional pricing approach sounds like it might be a good fit for this study.