Efficient design with zero priors or near zero priors

[Michiel Bliemer]

Steve,

In your script with interaction effects, the coefficient of x1 is (b1+i1*x6), so x6 moderates the preferences for x1. And the same for the other attributes. The question is if this has a meaningful interpretation, I am not sure.

Note that you should remove the dot "." after i1, i2, etc.

Michiel