, whereby some causes are deemed more important than others, are ubiquitous in historical studies. Drawing from influential recent work on causation, I develop a definition of causal-explanatory strength. This makes clear exactly which aspects of explanatory weighting are subjective and which objective. It also sheds new light on several traditional issues, showing for instance that: underlying causes need not be more important than proximate ones; several different causes can each be responsible for most of an effect; small causes need (...) not be less important than big ones; and non-additive interactive effects between causes present no particular difficulty. Key Words: causation • explanation • history • interaction • proximate • underlying. (shrink)

Comparing different causes’ importance, and apportioning responsibility between them, requires making good sense of the notion of partial explanation, that is, of degree of explanation. How much is this subjective, how much objective? If the causes in question are probabilistic, how much is the outcome due to them and how much to simple chance? I formulate the notion of degree of causation, or effect size, relating it to influential recent work in the literature on causation. I examine to what extent (...) mainstream social science methods--both quantitative and qualitative--succeed in establishing effect sizes so understood. The answer turns out to be, roughly: only to some extent. Next, the standard understanding of effect size, even though widespread, still has several underappreciated consequences. I detail some of those. Finally, I discuss the separate issue of explanandum-dependence, which is essential to assessing any cause’s explanatory importance and yet which has been comparatively neglected. (shrink)

The writing of history typically involves opinions that cannot be established by historical evidence. This 'involvement' takes two main forms: first, the intimation of evaluative opinions is often the point of historical narratives; and second, as Weber maintained, opinion plays a constitutive role-the identification of historical objects, of explanatory problems, and perhaps even the selection of solutions to these problems is governed by opinions or commitments that cannot be proven historically. The comments of both Bulmer and Camic, for example, presume (...) the validity of opinions about what was and was not important in the history of American sociology. I reject these opinions. In the book, the rejection was intimated. Perhaps the most useful thing I can do in this reply is to identify and sharpen some of the differences in unprovable opinions between myself and the critics though I must say that they were charitable and mild critics indeed-and make explicit some of the things that I wished to intimate in the historical discussion but could not prove. There are two reasons for doing this: Most of the questions raised by each of the commentators can be more easily addressed if these hidden themes and differences of opinion are made more explicit. A more important reason is this: some of these conflicts might be turned into answerable historical problems. (shrink)