Week 4

Ordinal Regression

Before Class

Articles

The R package brms (which is a Bayesian data analysis package) is used in the papers below. While it is a Bayesian technique, the output is similar to a regression output.

• Bürkner P-C, Vuorre M. Ordinal Regression Models in Psychology: A Tutorial. Advances in Methods and Practices in Psychological Science. 2019;2(1):77-101. doi:10.1177/2515245918823199

• Veríssimo, J. (2021). Analysis of rating scales: A pervasive problem in bilingualism research and a solution with Bayesian ordinal models. Bilingualism: Language and Cognition, 24(5), 842-848. doi:10.1017/S1366728921000316

  • Describe what is meant by an ordinal variable

  • Describe how an ordinal variable can be represented using a latent continuous variable.

  • What is cumulative probability?

  • List some common applications of ordinal regression in your field

  • How do you interpret the coefficients in an ordinal regression model?

  • What is the proportional odds assumption underlying ordinal regression?

Videos

• Introduction to Ordinal regression in R

After Class

• Running ordinal regression in R