The historical turn in social science has prompted scholars to engage with the work of historians on a large scale. Here, social scientists face two standard problems of selection bias: confirmation bias and convenience sampling. So far, the record of dealing with these problems has been poor, and little has been done to specify how social…

Explanatory typologies have recently experienced a renaissance as a research strategy for constructing and assessing causal explanations. However, both the new methodological works on explanatory typologies and the way such typologies have been used in practice have been affected by two shortcomings. First, no elaborate procedures for assessing…

The use of controlled comparisons pervades comparative historical analysis. Heated debates have surrounded the methodological purchase of such comparisons. However, the quality and validity of the conceptual building blocks on which the comparisons are based have largely been ignored. This article discusses a particular problem pertaining to these…