Would be interested in following up with ordinal explanatory variables as well. Do reasonable transformations of ordinal variables of interest matter? How about controls? How about when ordinal variables are fed into data reduction routines such as PCA or other factor analysis techniques?

Ioannidis, John P. A., T. D. Stanley, and Hristos Doucouliagos. “The Power of Bias in Economics Research.” The Economic Journal 127 (2017): 236-265.

]]>Thanks for reaching out! I’d love to talk and partner in some way with your work as well. Send me an email at bloem.jeff@gmail.com. Looking forward to hearing from you. ]]>