Multidimensional Regression Discontinuity (MRD) Design

[arutyunovv]

Background article: Chapter 5 of Cattaneo, Idrobo, and Titiunik (2024)
Notes: MRD includes two distinct types of RDD settings - RDD with multiple cutoffs and RDD with multiple running variables. Depending on how much detail we want to go into, we might need to split this issue into two separate topics. RDD with multiple running variables is also closely linked with the geographic RD (GRD) design.