Showing posts with label methods. Show all posts
Showing posts with label methods. Show all posts

Wednesday, September 5, 2012

More on models, methods, etc.

This is a response to Phil Arena's comment on my immediately preceding post and also to one of Kindred Winecoff's comments. (I decided to put my response up here rather than burying it in the comment thread.)

Phil wrote, in part:
...I think you're being a bit unfair here, LFC. I can't speak for Sullivan, but myself, I would never give policy advice based on analogies. Nor would I ever assume that my simplifying model (be it statistical or theoretical) has captured all the relevant details, thus obviating the need for any appreciation of the specifics of any given case when deciding how to handle that case....I think you're turning statistical modelers into a caricature.
My post speculated about whether a scholar's epistemological and/or methodological orientation (or 'standpoint of inquiry'[1]) might affect how he or she would give advice to a policymaker. I wrote: "...
if you are a scholar with a more nomothetic mindset (e.g. Sullivan), if a policymaker called you and asked you what to do, you might start thinking in terms of historical analogies, because you are used to homogenizing historical cases.... (emphasis added)."

Phil says he would never give advice based on analogies. OK. But I never said anyone would give such advice. I said might, not would. Maybe the modeler would just say to the policymaker: "Here's what my model suggests are the relevant considerations. How you weigh these considerations is up to you and to others who may know more about the specifics of this particular case or issue than I do." Maybe the modeler would say: "Sorry, I don't give policy advice. Goodbye." I don't know. I was speculating. Nonetheless, despite my explicitly tentative language, it was probably a mistake to bring Sullivan's name into this aspect of the post. I'll concede that much. As to whether I caricatured modelers, readers can make up their own minds on that.

Kindred wrote in his first comment (and Phil agreed with this):
We always approach new cases with reference to old ones. I don't think there's any way around it, and if there were I'm not sure the "on its own" approach would outperform the "look for similarities with past events and act accordingly". I don't think it's unreasonable to believe that we use mental models (i.e. heuristics) all the time anyway, so trying to create better models is better than relying on worse ones.
I don't think there is much real disagreement among us here, though there is probably some difference in emphasis. Do we always approach new cases with reference to old ones? Yes, probably at some level, but "approaching new cases with reference to old ones" can mean different things in operation, depending on one's particular bent. In any event I am not disparaging models if they are used as one tool or method. They are suited for answering or exploring some questions more than others. It's useful to know that the nature of the stronger state's objective in an asymmetric conflict affects, or may affect, the likelihood of its success (per Sullivan). But if you all had was the general proposition that the more coercive (i.e. less 'brute-force') the objective the lower the likelihood of success, that, standing alone, would not equip you either to analyze adequately a particular case or to give policy advice about any given situation. I think we probably agree on that. Which in turn raises the question whether this (i.e., our discussion) has all been a waste of time. Again, I'll let readers judge that.
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1. This phrase comes from a just-published article by Christopher Meckstroth in the August 2012 issue of APSR. More on that later.

Sunday, September 2, 2012

Big countries, small wars, different mindsets

Political scientists and other scholars have spilled a lot of ink on the question of why big states lose small wars, i.e., wars against weaker adversaries. Phil Arena recently pointed me to
Patricia Sullivan's 2007 JCR article, which I have looked at (meaning looked at, not read every single word of). Her main argument, put in simplified form, is that big states are more likely to lose small wars when their objective is coercive, i.e., when it requires the adversary to change its behavior, as opposed to when the objective can be accomplished simply with brute force (i.e., overthrowing a regime or conquering territory). The main reason, she argues, is that big states are more likely to underestimate the costs of achieving coercive objectives. Sullivan has a typology of objectives on a continuum with brute-force objectives at one end and coercive objectives at the other. [
Cf. Schelling, Arms and Influence (1966).]

Interestingly, the objective "maintain regime authority" falls in the middle of Sullivan's continuum. This is interesting because if you had to choose a three-word label for the U.S. objective in Afghanistan, it would be "maintain regime authority" (against those who seek to overthrow it). That was also basically the U.S. objective in Vietnam, as Sullivan suggests (i.e., the stated aim was to maintain an independent, non-Communist South Vietnam).

The main point I want to make is that looking at this article highlighted (once again) for me the distinction between those who emphasize the idiographic in their methods versus the nomothetic, or to put it in simpler terms (this would probably drive PTJ up the wall, never mind), the difference between those who do historical case studies and those who do formal modeling or quantitative work (yes, some people do both in the same book or article, but we'll put that aside for now).

Sullivan's approach would suggest that the wars in Afghanistan and Vietnam are basically similar because the objective (maintain regime authority) was the same. Of course she would acknowledge there are local differences, but she is not concerned with exploring them; she is interested in a model that explains, at some kind of quasi-'law-like' level, when big states lose small wars, and she gets there via a 'homogenizing' approach, so to speak. So if you took her approach, even though her concern is not explicitly with policy debates or decision-making, you might be quite receptive to analogies between Afghanistan and Vietnam.

A case-study approach might suggest something quite different. As opposed to a receptivity to the Vietnam-Afghanistan analogy, it might suggest a wariness about such an analogy and indeed about analogies in general. Yuen Foong Khong's Analogies at War (1992) showed quite convincingly that analogies to Munich and to the Korean War exercised a harmful influence on the Johnson administration's Vietnam policymaking. The takeaway lesson of that book, one could argue, is that because even smart people find it difficult to use analogies properly (i.e., in a sufficiently discriminating way), one should be wary of the mobilization and use of historical analogies, especially in a broad-brush way (e.g. "Afghanistan is like Vietnam"), in policy debates. Each case should be looked at primarily on its own, in other words.

One might say there is no contradiction here. Sullivan is interested in explaining outcomes, not prescribing a method for policymakers to use in decision-making. Khong is interested in showing why and how policymakers tend to misuse historical analogies. They are doing different things but not contradictory things. OK. Nonetheless, if you are a scholar with a more nomothetic mindset (e.g. Sullivan), if a policymaker called you and asked you what to do, you might start thinking in terms of historical analogies, because you are used to homogenizing historical cases and treating them as data points to be coded. Whereas if you have a more idiographic mindset, you might be less prone to think in terms of analogies, i.e., in terms of similarities between cases, and more prone to emphasize that each situation is unique. And I think that might be true even if, for purposes of getting your dissertation or article or book past the relevant authorities, you made a general argument that mobilized case studies in its support. Close contact with the historical specifics of cases, even when mobilized to support a general thesis or argument, is bound to sensitize one to differences and unique elements. In other words, even if (as is very often the case) you are doing case studies to develop or back up an overarching theory, you are bound, almost despite yourself as it were, to acquire some wariness about the merits of generalization.

Of course, our two hypothetical scholars might end up, policy-wise, in the same place: for example, both might have decided to oppose the Obama administration's "surge" in Afghanistan (or to favor it, as the case may be). But they would have reached their conclusion, whatever it was, by rather different routes.

P.s. Just to be clear (and repetitive), that the U.S. lost in Vietnam doesn't necessarily mean it's going to 'lose' in Afghanistan. This partly depends on how one defines 'victory'. (See this post and the attached comments.)