2nd-ed-Dataset-Chapter-4.knit The Regional Authority Index The Regional Authority Index measures multilevel governance across the world. The data is collected by Liesbet Hooghe, Gary Marks, Arjan H. Schakel, Sara Niedzwiecki, Sandra Chapman-Osterkatz, and Sarah Shair-Rosenfield and extensively described in two books, “Measuring Regional Authority: A Postfunctionalist Theory of Governance: Volume I” and “Community, Scale, and Regional Governance: A Postfunctionalist Theory of Governance: Volume II.