I am sorry that I keep asking, maybe very basic questions about it, but I couldn't understand this.

I could finally open the alpha file which gives me over 40000 iteraction. Is this a correct outcome? and I would be glad if you could help me with the interpretation of it regarding the affect of covariates.

I just want to see the affect of my covariates on the attributes and their levels. I have added 5 attributes to my survey in ACBC (without BYO, only choice tasks) and I want to know how the 3 covariates (which I used likert scales with 3,4, and 6 items) effect their choices of attributes and levels and to what degree. I want to know how a person being individualist affects her choices and to what degree compared to collectivist person. Could you help me how can I do that?

Should I calculate the means of the items to come up with just 1 column to add on my data on Sawtooth HB estimation or should I add the items all as covariates ?

Should I use SPSS to find out the moderating roles ? or am I able to see that within the HB estimation output ?

I would be more than glad if you could figure this out as I am stucked now between softwares to find a way to see this.

Thank you again for your help and time.