I advise organisations on the design, implementation, and interpretation of impact evaluations, with a particular focus on improving the quality and reliability of evidence used in public policy. Drawing on my research at UCL — including the ARGIE project on the reliability of government evaluations — and my role at the Cabinet Office Evaluation Task Force, I speak and consult on topics including evaluation methodology, the robustness of quantitative evidence in government, and strategies for building evaluation capacity across the public sector. I work with government departments, research funders, and NGOs on experimental and quasi-experimental evaluation design.
My academic research uses large-scale survey experiments to study political attitudes, public opinion, and political communication. I have extensive experience designing and analysing conjoint experiments, vignette studies, and other stated-preference methods for measuring how people reason about complex trade-offs — from public spending priorities to moral judgements to political representation. I have also developed multilevel regression and post-stratification (MRP) models for election forecasting and for the measurement of public attitudes at local levels. I have used these approaches for consultancy work with financial instutitions, political parties, and government orgnaisations. I am available to speak and advise on survey methodology, polling, attitude measurement, and the design of public opinion research.
For speaking enquiries, advisory work, or consultancy, please email j.blumenau@ucl.ac.uk.