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Dear all,

I have conducted a stated choice experiment using a Choice Design from Ngene. It all worked very well, with one exception. One of the estmated parameters has the "wrong" sign, and I have no explanation for it. I am now concerned that it might be due to a design issue and not due to actual ...

Dear all,

we are conducting a DCE in partnership with a survey institute. They are using the "idefix" R-package. We asked them to generate 60 choice sets and 10 blocks (6 choice sets each). They asked us whether they should just randomly fill the blocks with the choice sets generated by the package ...

Dear all,

I have seen some papers in the past that used forced choices (no opt-out or status quo) and afterwards asked the respondent whether they would actually make this choice in reality. How would I include such a yes/no question in a mixed logit model and how would I interpret the parameter ...

Good morning,

I am creating a choice experiment where I show monthly savings in terms of the share of the monthly electricity bill (in percent). I would then like to know whether showing these same savings in monetary values makes a difference in stated preferences. My idea was to show the same ...

Dear Michiel,

thank you for your response.

Regarding that you said that dummy coding all variables is your preferred method of achieving level balance, how would I do that? Is the following correct assuming that higher costs yield more negative utility?


b4.dummy[-0.000001|-0.000002|-0.000003|-0 ...

Dear Michiel,

thank you so much for your reply. If I understand your proposal correctly, it would restrict the cost levels of each level of attribute "A" to a certain range of costs that slightly overlap. Does this not affect the interpretation of preferences for attribute "A", as level 3 of ...

Hello,

I am currently in the midst of designing an unlabelled choice experiment and I am unsure about including constraints to ensure realistic choice sets.
The respondents are supposed to choose amongst 3 unlabelled options or an opt-out alternative ("I do not want to choose any of the ...

Greetings,

I ran multiple discrete choice experiments in which I included a no-choice/status quo option. In the analysis, I included a dummy variable for the no-choice option. My question now is how to interpret a no-choice dummy in terms of WTP. Say my model is an unlabeled choice experiment where ...