Confirmation bias in causal qualitative research

The bi-annual publication of the APSA Section on Qualitative Methods and Multi-Method Research has a highly interesting and controversial symposium on confirmation bias in process tracing in its current issue. I have written a Twitter thread on the question of what the evidence for confirmation bias in qualitative research is. Thanks to the app Threadreader, the thread can be read conveniently read on this webpage without having to access Twitter (and it also saves me from reposting it here).

About ingorohlfing

I am Professor for Methods of Comparative Political Research at the Cologne Center for Comparative Politics at the University of Cologne ( My research interests are social science methods with an emphasis on case studies, multi-method research, and philosophy of science concerned with causation and causal inference. Substantively, I am working on party competition and parties as organizations.
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