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Posted by Paul Curran on February 01, 2000 at 06:28:15:
In Reply to: Re: We will now ask you some screening questions... posted by Scott W. Spain on January 31, 2000 at 11:39:36:
I don't mean to speak on behalf of Daniel, but would like to toss in my two cents.
In a lot of research that is done, the analysis is focused exclusively on the completed interviews. Analysis of the 'non-qualifier' data is reduced to perhaps a simple incidence calculation. However, a lot of valuable information and insight can be extracted from the non-qualifier data.
Eliminating non-qualifed respondents from the sample is more of an economic reality -- you can't afford to interview everyone, but it would sure be nice to.
In at least three of the points you make, I can think of some interesting information that could be extracted from the non-qualifed group. I'm just not sure that insight is worth the money it would cost to collect it, however.
Perhaps what Daniel is saying is that on-line research removes a lot of the economic factors, so you may as well collect the screening and demo data for everyone, and simply remove the appropriate cases when doing the analysis.
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