The aim of this study was to investigate the performance of the Fisher, Feldt, Bonner, and Hakstian and Whalen (HW) confidence intervals methods for the non-parametric reliability estimate, ordinal alpha. All methods yielded unacceptably low coverage rates and potentially increased Type-I error rates.
Turner, H. J., Natesan, P., & Henson, R. K. (2017). Performance Evaluation of Confidence Intervals for Ordinal Coefficient Alpha. Journal of Modern Applied Statistical Methods, 16(2), 157-185. doi: 10.22237/jmasm/1509494940