Measure of International Authority (MIA)

This page contains the Measure of International Authority (MIA) dataset. MIA contains estimates of the delegation and pooling of authority (1950-2010) as well as of the scope of the policy portfolio for 76 international governmental organizations (1950-2017). The MIA data are annual. We are working on an update through 2020.

Two books accompany the measurement project. If you are planning to use the data or any of the documents posted here, please cite these works.

The first book presents a measure of delegation and pooling for 76 IOs and profiles for 45 of them (1950-2010).Profiles for the remaining 31 IOs can be downloaded below.

Liesbet Hooghe, Gary Marks, Tobias Lenz, Jeanine Bezuijen, Besir Ceka, Svet Derderyan. 2017. Measuring International Authority: A Postfunctionalist Theory of Governance. Oxford: Oxford University Press. Table of contents 
Order here.

The second book presents a measure of IO policy scope (1950-2017).

Liesbet Hooghe, Tobias Lenz, Gary Marks. 2019. A Theory of International Organization. Oxford: Oxford University Press (forthcoming). Table of contents // Online Appendix (containing additional analyses for chapters 5-8)
Order here (30% discount)


The scores produced in the Measure of International Authority (MIA) are akin to Lego blocks that summarize coherent ingredients of international governance that can be aggregated in different ways for different purposes. Chapter One discusses the theoretical-conceptual underpinnings of the Measure of International Authority (MIA). It explains how we conceptualize international authority and operationalize the abstract concept with concrete indicators. Chapter Two sets out how we apply the coding scheme (Appendix II) and produce scores for particular IOs, on components of decision making or institutional structure, and across years. It sets out rules that underpin our interpretations while keeping a sharp eye on opaque concepts, awkward cases, and borderline decisions. It is intended to help the user traverse the gap between indicator and observation. Chapter Three scales up these indicators (or scores) to two dimensions of international authority, delegation and pooling. The first two sections of this chapter show how we aggregate scores for delegation and for pooling respectively. In the third section, we provide a glimpse into delegation and pooling over time and across decision areas. 

Appendices with supportive material (pre-publication)