I started manipulating my response data from a ACBC excercise for the purpose of estimating alternative specific price parameters (to avoid collinearity between summed price and certain levels that impact the summed prices significantly).
Once I'm done, to my understanding I won't be able to apply the calibration function for the None-Threshold. So instead I decided to add a yes/no question to every tournament task ("Would you really buy your preferred option?") to calibrate my "none".
Now that I'm coding these dual response tasks into the response data I realize that those tasks are identical to the screening tasks for the respective concepts. In the screening I phrased the question "Would you generally consider this concept?" and in dual response task I ask whether the preferred concept would actually be bought in real life.
HB won't make a difference between the two question phrasings and, therefore, I wonder what the effect on the preference parameters will be if the same concept was chosen over "none" in the screening section but would not be bought according to the tournament dual response task. Does this contradicting response regarding the same concept "cancel out"? Does it add noise or does it possibly cause problems in the estimation?
Thanks for some thoughts on this,