Dear Statalist,
I want to estimate the effect of endowment, netprice, religiosity and knowledge on contribution.

This data was collected from an experiment. Each individual answered 5 sets of questions, refer to the variable "Questionnumber".

- Variables endowment and netprice changes for each question of the 5 questions
- religiosity and knowledge remains the same for the 5 questions

Due to the nature of the data, I feel it's a random effect model for panel data. But would a mixed effect model be more appropriate?

I'm attaching my data for reference. I would really appreciate some suggestions regarding the appropriate codes.