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Faculty of Economics


PhD Title

Essays in Macroeconomics and Productivity

Research Interests

Macroeconomics, Growth, Business Cycles, Productivity

Recent Publications

Cambridge Working Papers in Economics

Berge, T., De Ridder, M. and Pfajfar, D. When is the Fiscal Multiplier High? A Comparison of Four Business Cycle Phases, (2020) CWPE2041
De Ridder, M. Market Power and Innovation in the Intangible Economy, (2019) CWPE1931
De Ridder, M. and Pfajfar, D. Policy Shocks and Wage Rigidities: Empirical Evidence from Regional Effects of National Shocks, (2017) CWPE1717
De Ridder, M. Investment in Productivity and the Long-Run Effect of Financial Crises on Output, (2016) CWPE1659

Recent Activities

An Interview with Professor Christina Romer
Professor Christina Romer (Berkeley) was interviewed by PhD Candidate Maarten de Ridder about her the 2019-2020 Keynes Lecture on "The Narrative Approach to Establishing Causation in Macroeconomics", as well as on fiscal policy in the Obama administration and the current state of the economy.
Published on - Monday 21st October 2019

Market Power and Innovation in the Intangible Economy
A recent paper by PhD Candidate Maarten De Ridder of the Faculty of Economics was discussed in yesterday’s speech by ECB Vice-President Luis de Guindos. De Guindos summarized Market Power and Innovation in the Intangible Economy, which is Maarten’s Job Market Paper for the year 2019-2020.
Published on - Wednesday 25th September 2019

Market Power and Innovation
PhD candidate Maarten de Ridder has written a VoXEU column on the slowdown of productivity growth, the decline in business dynamism, and the rise of market power. He shows that these trends can be explained by the rising use of intangible inputs such as information technology and software.
Published on - Wednesday 3rd July 2019

Best Finance Student Paper Award
Congratulations to Maarten De Ridder and Thomas Auld (Faculty PhD students) who have both won prizes at the CERF Cambridge Best Finance Student Paper Award.
Published on - Monday 18th June 2018

Maarten de Ridder wins Student-Led Teaching Award for Best Lecturer
Phd student Maarten de Ridder has won one of the Cambridge Student Union's, Student-Led Teaching Awards and will be honored at a ceremony in the University Combination Room on May 9th.
Published on - Thursday 11th May 2017

Keynes Fund Sponsored Projects

de Ridder, M., Market Power and Innovation in the Intangible Economy (JHOX)

COVID-19 Economic Research

Special Feature: Government Expenditures During the Coronavirus Pandemic Have a Large Positive Effect on Economic Growth


PI Paper Stata - Stata Classes
Part IIA/Diploma - Stata Classes
PIIB - Stata Classes
MPhil - Stata Classes
MPhil E200 - Macroeconomics Classes

Supervisory Team

Maarten De Ridder

PhD Student

Research Group:

CV: Curriculum Vitae

Personal Site:
Contact Details
College: Christ's College