Heuristics for a mechanisms-based methodology

Let’s imagine that I’m a young sociologist or political scientist who has gotten interested in the social-mechanisms debates, and I’d like to frame my next research project around a set of heuristics that are suggested by the mechanisms approach. What might some of those heuristics look like? What is a "mechanisms-based methodology" for sociological research? And how would my research play out in concrete terms? Here are a few heuristics we might consider.

1. Identify one or more clear cases of the phenomenon I’m interested in understanding
2. Gain enough empirical detail about the cases to permit close examination of possible causal linkages
3. Acquaint myself with a broad range of social mechanisms from a range of the social sciences (political science, economics, anthropology, public choice theory, critical race studies, women’s studies, …)
4. Attempt to segment the phenomena into manageable components that may admit of separate study and analysis
5. Use the method of process-tracing to attempt to establish what appear to be causal linkages among the phenomena
6. Use my imagination and puzzle-solving ability to attempt to fit one or more of the available mechanisms into the phenomena I observe
7. Engage in quasi-experimental reasoning to probe the resulting analysis: if mechanism M is involved, what other effects would we expect to be present as well? Do the empirical realities of the case fit these hypothetical expectations?

These heuristics represent in a rough-and-ready way the idea that there are some well understood social processes in the world that have been explored in a lot of empirical and theoretical detail. The social sciences collectively provide a very rich toolbox of mechanisms that researchers have investigated and validated. We know how these mechanisms work, and we can observe them in a range of settings. This is a realist observation: the social world is not infinitely variable, and there is a substrate of activity, action, and interaction whose workings give rise to a number of well understood mechanisms. Here I would include free rider problems, contagion, provocation, escalation, coercion, and log-rolling as a very miscellaneous set of exemplars. So if we choose to pursue a mechanisms-based methodology, we are basically following a very basic intuition of realism by asking the question, "how does this social phenomenon work in the settings in which we find it?".

So how might a research project unfold if we adopt heuristics like these? Here is a striking example of a mechanisms approach within new-institutionalist research, Jean Ensminger's account of bridewealth in the cattle-herding culture of Kenya (Making a Market: The Institutional Transformation of an African Society). First, some background. The cattle-herding economic regime of the Orma pastoralists of Kenya underwent substantial changes in the 1970s and 1980s. Commons grazing practices began to give way to restricted pasturage; wage labor among herders came to replace familial and patron-client relations; and a whole series of changes in the property system surrounding the cattle economy transpired as well. This is an excellent example for empirical study from a new-institutionalist perspective. What explained the particular configuration of norms and institutions of the earlier period? And what social pressures led to the transition towards a more impersonal relationship between owners and herders? These are questions about social causation at multiple levels.

Ensminger examines these questions from the perspective of the new institutionalism. Building on the theoretical frameworks of Douglass North and others, she undertakes to provide an analysis of the workings of traditional Orma cattle-management practices and an explanation of the process of change and dissolution that these practices underwent in the decades following 1960. The book puts forward a combination of close ethnographic detail and sophisticated use of theoretical ideas to explain complex local phenomena.

How does the new institutionalism approach help to explain the features of the traditional Orma cattle regime identified by Ensminger’s study? The key institutions in the earlier period are the terms of employment of cattle herders in mobile cattle camps. The traditional employment practice takes the pattern of an embroidered patron-client relation. The cattle owner provides a basic wage contract to the herder (food, clothing, and one head of cattle per year). The good herder is treated paternally, with additional “gifts” at the end of the season (additional clothing, an additional animal, and payment of the herder’s bridewealth after years of service). The relation between patron and client is multi-stranded, enduring, and paternal.

Ensminger understands this traditional practice as a solution to an obvious problem associated with mobile cattle camps, which is fundamentally a principal-agent problem. Supervision costs are very high, since the owner does not travel with the camp. The owner must depend on the herder to use his skill and diligence in a variety of difficult circumstances—rescuing stranded cattle, searching out lost animals, and maintaining control of the herd during harsh conditions. There are obvious short-term incentives and opportunities for the herder to cheat the employer—e.g. allowing stranded animals to perish, giving up on searches for lost animals, or even selling animals during times of distress. The patron-client relation is one possible solution to this principal-agent problem. An embedded patron-client relation gives the herder a long-term incentive to provide high-quality labor, for the quality of work can be assessed at the end of the season by assessment of the health and size of the herd. The patron has an incentive to cheat the client—e.g. by refusing to pay the herder’s bridewealth after years of service. But here the patron’s interest in reputation comes into play: a cattle owner with a reputation for cheating his clients will find it difficult to recruit high-quality herders.

This account serves to explain the evolution and persistence of the patron-client relation in cattle-camps on the basis of transaction costs (costs of supervision). Arrangements will be selected that serve to minimize transaction costs. In the circumstances of traditional cattle-rearing among the Orma the transaction costs of a straight wage-labor system are substantially greater than those associated with a patron-client system. Therefore the patron-client system is selected.

This analysis identifies mechanisms at two levels. First, the patron-client relation is the mechanism through which the endemic principal-agent problem facing cattle owners is solved. The normal workings of this relation give both patron and client a set of incentives that leads to a stable labor relation. The higher-level mechanism is somewhat less explicit, but is needed for the explanation to fully satisfy us. This is the mechanism through which the new social relationship (patron-client interdependency) is introduced and sustained. It may be the result of conscious institutional design or it may be a random variation in social space that is emulated when owners and herders notice the advantages it brings. Towards the end of the account we are led to inquire about another higher-level mechanism, the processes through which the traditional arrangement is eroded and replaced by short-term labor contracts.

This framework also illustrates the seventh heuristic above, the use of counterfactual reasoning. This account would suggest that if transaction costs change substantially (through improved transportation, for example, or through the creation of fixed grazing areas), that the terms of employment would change as well (in the direction of less costly pure wage-labor contracts). And in fact this is what Ensminger finds among the Orma. When villages begin to establish “restricted grazing areas” in the environs of the village, it is feasible for cattle owners to directly supervise the management of their herds; and in these circumstances Ensminger finds an increase in pure wage labor contracts.

What are the scientific achievements of this account? There are several. First, it takes a complicated and detailed case of collective behavior and it makes sense of the case. It illuminates the factors that influence choices by the various participants. Second, it provides insight into how these social transactions work (the mechanisms that are embodied in the story). Third, it begins to answer -- or at least to pose in a compelling way -- the question of the driving forces in institutional change. This too is a causal mechanism question; it is a question that focuses our attention on the concrete social processes that push one set of social behaviors and norms in the direction of another set of behaviors and norms. Finally, it is an empirically grounded account that gives us a basis for a degree of rational confidence in the findings. The case has the features that we should expect it to have if the mechanisms and processes in fact worked as they are described to do.

A final achievement of this account is very helpful in the context of our efforts to arrive at explanations of features of the social world. This is the fact that the account is logically independent of an effort to arrive at strong generalizations about behavior everywhere. The account that Ensminger provides is contextualized and specific, and it does not depend on the assumption that similar social problems will be solved in the same way in other contexts. There is no underlying assumption that this interesting set of institutional facts should be derivable from a general theory of behavior and institutions. Instead, the explanation is carefully crafted to identify the specific (and perhaps unique) features of the historical setting in which the phenomenon is observed.

(Here is a nice short article by David Collier on the logic of process-tracing; link. And here is an interesting piece by Aussems, Boomsma, and Snijders on the use of quasi-experimental methods in the social sciences; link.)

The new institutionalism

The new institutionalism in sociology is a particularly promising prism through which to understand a lot of social behavior and change. Victor Nee and Paul Ingram define the approach in these terms in "Embeddedness and Beyond" in The New Institutionalism in Sociology:

Specifying the mechanisms through which institutions shape the parameters of choice is important to an adequate sociological understanding of economic action. These social mechanisms, we argue, involve processes that are built into ongoing social relationships -- the domain of network analysis in sociology. Yet, how institutions and networks combine to determine economic and organizational performance is inadequately theorized in the sociological study of economic life.

An institution is a web of interrelated norms -- formal and informal -- governing social relationships. It is by structuring social interactions that institutions produce group performance, in such primary groups as families and work units as well as in social units as large as organizations and even entire economies. (Nee and Ingram, p. 19)

The new institutional economics is essentially a marriage of the familiar assumptions of rational choice theory with the observation that “institutions matter”—that is, that the behavior of purposive individuals depends critically on the institutional constraints within which they act, and the institutional constraints themselves are under-determined by material and economic circumstances. So institutions evolve in response to the strategic actions of a field of actors. The paragraphs quoted above make it clear that the approach stipulates a very tight relationship between institutions and norms regulating behavior. The approach pays close attention to the importance of transaction costs in economic activity (the costs of supervision of a work force, for example, or the cost of collecting information on compliance with a contract). And it postulates that institutions emerge and persist as a solution to specific problems of social coordination.

Topics of central concern to the practitioners of the new institutionalism include principal-agent problems (the costs of assuring that one’s agents are performing their functions according to the interests of the principal); the design of alternative systems of property rights; collective action problems; and mechanisms of collective decision-making. In each instance the analysis is designed to illuminate the ways in which institutional arrangements have been selected (or have evolved) in such ways as to respond to an important element of transaction costs. It bears pointing out that this approach does not assume that “optimal” institutions emerge, since the actual institutions selected depend on the distribution of political power across groups and their antecedent interests. This point is richly born out in Robert Bates’s important arguments concerning government agricultural policies in other parts of Africa (Markets and States in Tropical Africa: The Political Basis of Agricultural Policies) and also in Jack Knight's efforts to frame the conflictual elements of institutions (Institutions and Social Conflict).

Here is a striking example of a new-institutionalist analysis of a concrete sociological phenomenon: Jean Ensminger's account of bridewealth in the cattle-herding culture of Kenya (Making a Market: The Institutional Transformation of an African Society). First, some background. The cattle-herding economic regime of the Orma pastoralists of Kenya underwent substantial changes in the 1970s and 1980s. Commons grazing practices began to give way to restricted pasturage; wage labor among herders came to replace familial and patron-client relations; and a whole series of changes in the property system surrounding the cattle economy transpired as well. This is an excellent example for empirical study from a new-institutionalist perspective. What explained the particular configuration of norms and institutions of the earlier period? And what social pressures led to the transition towards a more impersonal relationship between owners and herders?

Ensminger examines these questions from the perspective of the new institutionalism. Building on the theoretical frameworks of Douglass North and others, she undertakes to provide an analysis of the workings of traditional Orma cattle-management practices and an explanation of the process of change and dissolution that these practices underwent in the decades following 1960. The book puts forward a combination of close ethnographic detail and sophisticated use of theoretical ideas to explain complex local phenomena.

How does the new institutionalism approach help to explain the features of the traditional Orma cattle regime identified by Ensminger’s study? The key institutions in the earlier period are the terms of employment of cattle herders in mobile cattle camps. The traditional employment practice takes the pattern of an embroidered patron-client relation. The cattle owner provides a basic wage contract to the herder (food, clothing, and one head of cattle per year). The good herder is treated paternally, with additional “gifts” at the end of the season (additional clothing, an additional animal, and payment of the herder’s bridewealth after years of service). The relation between patron and client is multi-stranded, enduring, and paternal.

Ensminger understands this traditional practice as a solution to an obvious principal-agent problem associated with mobile cattle camps. Supervision costs are very high, since the owner does not travel with the camp. The owner must depend on the herder to use his skill and diligence in a variety of difficult circumstances—rescuing stranded cattle, searching out lost animals, and maintaining control of the herd during harsh conditions. There are obvious short-term incentives and opportunities for the herder to cheat the employer—e.g. allowing stranded animals to perish, giving up on searches for lost animals, or even selling animals during times of distress. The patron-client relation gives the herder a long-term incentive to provide high-quality labor, for the quality of work can be assessed at the end of the season by assessment of the health and size of the herd. The patron has an incentive to cheat the client—e.g. by refusing to pay the herder’s bridewealth after years of service. But here the patron’s interest in reputation comes into play: a cattle owner with a reputation for cheating his clients will find it difficult to recruit high-quality herders.

This account serves to explain the evolution and persistence of the patron-client relation in cattle-camps on the basis of transaction costs (costs of supervision). Arrangements will be selected that serve to minimize transaction costs. In the circumstances of traditional cattle-rearing among the Orma the transaction costs of a straight wage-labor system are substantially greater than those associated with a patron-client system. Therefore the patron-client system is selected.

This framework would also suggest that if transaction costs change substantially (through improved transportation, for example, or through the creation of fixed grazing areas), that the terms of employment would change as well (in the direction of less costly pure wage-labor contracts). And in fact this is what Ensminger finds among the Orma. When villages begin to establish “restricted grazing areas” in the environs of the village, it is feasible for cattle owners to directly supervise the management of their herds; and in these circumstances Ensminger finds an increase in pure wage labor contracts.

New institutionalism is a particularly appealing sociological framework from the point of view of the philosophy of society involved here because it asks the right sorts of questions at the right level. The level of analysis is fairly close to the ground -- fairly proximate to the actions of socially embedded agents. And the questions that are posed are key: what social problems is a given set of institutions solving? How do these institutions relate to the purposive actions of individuals? And what are the social mechanisms that stabilize or destabilize a given institutional configuration at a certain point in time?

Reasoning about agents

Rational choice theory usually advances a highly abstract theory of decision-making -- utility-maximizing choice among discrete options -- and then draws deductive conclusions. But actual human reasoners don't look much like this abstract ideal. It is interesting to consider how much one can explain while weakening the heroic assumptions about agent rationality. It turns out that it is possible to explain quite a bit of social behavior on the basis of a theory of agency that incorporates only a few qualitative assumptions about practical agency: purposiveness, deliberation, comparison, and choice -- without the specific mathematics of utility theory. And this gives a basis for a “practical agency” type of social explanation that doesn’t fall directly under the many criticisms that are offered of formal rational choice theory. And it represents a framework of analysis that corresponds fairly directly to Aristotle’s conception of deliberation.

First, purposiveness. We assume that agents have purposes -- states of affairs that they want to bring about. Their actions are intended to bring about their goals. (This is the basic assumption of means-end rationality.)

Second, deliberation. We assume that agents collect information about the courses of action that are feasible in the moment. And they collect information about the likely consequences of the various actions that they are considering. Within a deliberative process they choose an action to pursue.

Third, comparison. We assume that the agent deliberates by considering the advantages and disadvantages of each action (costs and benefits) and the degree to which the possible or probable effects of the choice serve the set of purposes the agent pursues. Further, the agent may compare choices on the basis of the nature of the action itself rather than solely on the basis of consequences -- that is, the agent may combine deontological considerations with utilitarian considerations (this represents an element of Kant’s theory of moral decision-making). That is, the agent chooses on the basis of full comparison of the choices.

So far we have described purposive deliberation without invoking utilities. We have invoked the idea of preference in this account, because we have assumed that the agent prefers outcomes that better fulfill his/her purposes. And we have likewise invoked comparison and the idea of “more and less” of something in ranking outcomes. The apparatus of utility theory is one way of articulating or modeling these features -- but we are not forced to attribute a full apparatus of utility measurement and aggregation in order to attribute purposiveness and comparison. It will suffice if the agent can judge "X is better than Y in fulfilling my purposes."

So let's refer to this less abstract description as a “broad theory of purposive agency”. The question here is a simple one: does this description give us enough to get a social explanation going? I believe that it does, and that this demonstrates that the conception of agents as purposive decision-makers is more durable than any particular formal theory of decision-making.

I support this observation with a single inconclusive illustration. We can reproduce the public goods problem, and the derivation of the rationality of free-riding, using only the comparative resources of the reduced theory of agency. And we can simultaneously prepare a theoretical location for future empirical research for those instances where free-riding does not materialize as expected.

First the derivation of the tendency toward free riding in the presence of public goods. The agent has preferences among the possible outcomes of possible collective action. He/she recognizes that the probability of realizing the collective good is not significantly altered by participation. Agent further recognizes that there is a cost to participation. Agent decides to not participate, based on costs and outcomes: the benefit of participation and non-participation is equal and the cost of participation is greater, so non-participation is preferred.

But now consider what happens when we turn on a deontological component of the comparison. Agent notes that non-participation involves taking unfair advantage of the actions of others. Agent prefers actions that are fair. Agent therefore chooses participation.

Finally, we might further complicate things by allowing that agent allows tradeoffs between the cost-benefit comparison and the deontological comparison. In some instances the weight of fairness prevails and agent chooses the less-good alternative. In other cases the situation reverses. Agent sacrifices minor unfairness and chooses the better outcome.

There are many, many examples of explanations in sociology, anthropology, and history that account for an outcome based on analysis of the situation of deliberation confronting a hypothetical set of purposive agents; and substantial explanations ensue. (As one example, consider Jean Ensminger’s explanation of Kenyan cattle-tending and bride price practices as a solution to a principal-agent problem between cattle owners and cattle tenders; Making a Market: The Institutional Transformation of an African Society.)

A better social ontology

I believe that the social sciences need to be framed out of consideration of a better understanding of the nature of the social—a better social ontology. The social world is not a system of law-governed processes; it is instead a mix of different sorts of institutions, forms of human behavior, natural and environmental constraints, and contingent events. The entities that make up the social world at a given time and place have no particular ontological stability; they do not fall into “natural kinds”; and there is no reason to expect deep similarity across a number of ostensibly similar institutions – states, for example, or labor unions. (W. V. O. Quine’s metaphor of the bushes shaped to look like elephants comes to mind here; Word and Object.)

So the rule for the social world is – heterogeneity, contingency, and plasticity. And the metaphysics associated with classical thinking about the natural world – laws of nature, common, unchanging structures, and predictable processes of change – do not provide appropriate metaphors for our understandings and expectations of the social world. Nor do they suggest the right kinds of social science theories and constructs.

Instead of naturalism, I suggest an approach to social science theorizing that emphasizes agency, contingency, and plasticity in the makeup of social facts. It recognizes that there is a degree of pattern in social life – but emphasizes that these patterns fall far short of the regularities associated with laws of nature. It emphasizes contingency of social processes and outcomes. It insists upon the importance and legitimacy of eclectic use of social theories: the processes are heterogeneous, and therefore it is appropriate to appeal to different types of social theories as we explain social processes. It emphasizes the importance of path-dependence in social outcomes. It suggests that the most valid scientific statements in the social sciences have to do with the discovery of concrete social-causal mechanisms, through which some types of social outcomes come about.

And finally, this approach highlights what I call “methodological localism”: the view that the foundation of social action and outcome is the local, socially-located and socially constructed individual person. The individual is socially constructed, in that her modes of behavior, thought, and reasoning are created through a specific set of prior social interactions. And her actions are socially situated, in the sense that they are responsive to the institutional setting in which she chooses to act. Purposive individuals, embodied with powers and constraints, pursue their goals in specific institutional settings; and regularities of social outcome often result.

How does this perspective fit with current work in the social sciences? There are several current fields of social research that are particularly well suited to this approach. One is the field of comparative historical sociology, in its use of fairly detailed studies of similar cases in order to identify common causal mechanisms. Kathleen Thelen’s astute studies of different institutions of skill formation in Germany, UK, US, and Japan are an excellent case in point; she asks the twin questions, what causal processes give stability to a set of institutions? And what causal processes lead to a process of transformation in those institutions? The research methods of comparative historical sociology, then, are particularly well suited to the ontology of contingency, plasticity, and causal mechanisms (How Institutions Evolve: The Political Economy of Skills in Germany, Britain, the United States, and Japan).

Ethnography gives us a different angle on this same ontology. Ethnographers can give us insight into culturally specific mentalities—the “socially constructed individuals”. And they can give concrete analysis of the institutions that both shape individuals and are in turn shaped by them. More generally, qualitative research methods can offer a basis for discovery of some of the features of agency, mentality, and culture within the context of which important social processes take place. A good current example is Leslie Salzinger's Genders in Production: Making Workers in Mexico's Global Factories, a study of the social construction of femininity in the factories of the maquiladoras. C. K. Lee's sociology of Chinese factory protests is also a model of a study that combines qualitative and quantitative methods; Against the Law: Labor Protests in China's Rustbelt and Sunbelt.

The new institutionalism is a third theoretical perspective on social analysis and explanation. This approach postulates the causal reality of institutions; it highlights the point that differences across institutions lead to substantial differences in behavior; and it provides a basis for explanations of various social outcomes. The rules of liability governing the predations of cattle in East Africa or Shasta County, California, create very different patterns of behavior in cattle owners and other land owners in the various settings. (Mary Brinton and Victor Nee, The New Institutionalism in Sociology; Jean Ensminger, Making a Market: The Institutional Transformation of an African Society.) It is characteristic of the new institutionalism that researchers in this tradition generally avoid reifying large social institutions and look instead at the more proximate and variable institutions within which people live and act.

What kind of social science research and theory corresponds to these assumptions about social ontology? Here are some chief features--

• They make use of eclectic multiple theories and don't expect a unified social theory that explains everything
  
• They are modest in their expectations about social generalizations
• They look for causal mechanisms as a basis for social explanation
• They anticipate heterogeneity and plasticity of social entities
• They are prepared to use eclectic methodologies -- quantitative, comparative, case-study, ethnographic -- to discover the mechanisms and mentalities that underlie social change
  

We need a better sociology for the twenty-first century. If social scientists continue to be captivated by the scientific prestige of positivism and quantitative social science to the exclusion of other perspectives, they will be led to social science research that looks quite different from what would result from a view that emphasizes contingency and causal mechanisms. And if there are strong, engaging, and empirically rigorous examples of other ways of conducting social research that can come into broad exposure in the social sciences—then there is a greater probability of emergence of a genuinely innovative and imaginative approach to the problem of social knowledge.

Mechanisms and methodology

In its origin the causal mechanisms approach (link) is chiefly an answer to the question, “what is a good social explanation?”. So it turns out that much of the mechanisms discussion has taken place within the philosophy of science, especially the philosophy of social science and the philosophy of biology. The question I’d like to formulate here is whether mechanisms theory has any relevance to methodology as well? Can sociologists make better progress on concrete research problems by organizing some of their thinking around the construct of a social mechanism?

This kind of question comes up with respect to a number of the topics and innovations that have occurred in the philosophy of social science in recent years — critical realism, causal powers, and strategic fields, for example. It is certainly worthwhile developing theories and refinements of each of these concepts within the philosophy of social science. But it is an additional question to ask whether these concepts have a valuable role to play in discussions of research methodology and design as well.

So what is the problem of methodology, from the point of view of the working sociologist? The researcher has a number of preliminary tasks: What is the domain of social phenomena that are of interest? How can those phenomena be studied using available empirical tools? How can we theorize what is going on in this domain? How can we think about the nature of the entities, processes, causes, and meanings that make up this domain? And how can we probe the properties and dynamics of those sociological entities and processes?

Take a phenomenon like corruption. China is said to face a social and political problem deriving from widespread corrupt practices. How would we investigate the phenomenon of corruption in China (or India, the United States, or Finland)? Corruption is an umbrella concept that describes patterns of behavior across a wide range of domains: interactions between police and the public, practices through which business contracts are secured, enforcement of environmental and safety regulations, enforcement of trade regulations, practices through which individuals secure services from hospitals and licensing authorities, and there are indefinitely many other examples. Moreover, we can identify similar patterns of behavior in many countries, so there is an element of international comparison in play as well.

And yet not all instances of rule breaking are instances of corruption. So there is a preliminary task for the researcher, to engage in conceptual work and to define, for the purpose of the research enterprise, what kinds of behavior by agents and citizens will be counted as “corrupt”. Here we would like the researcher to work like a philosopher of language in some ways: “What do we mean by ‘X’ in ordinary or technical parlance?” In the current example, we would like the researcher to arrive at a working specification of corruption that is both reasonably practicable in application but also reasonably conformant to our prior assumptions about the category. (A definition of “corruption” that identifies corruption as “income-enhancing strategies by an economic actor” may be easy to apply but entirely inadequate as a specification of what we mean by corruption.) Robert Klitgaard does this kind of conceptual work in his 1988 and 1989 books, Controlling Corruption and Corrupt Cities: A Practical Guide to Cure and Prevention.

So let’s say we’ve offered a specification of corruption along these lines:

“[One species of] corruption involves situations in which individuals with decision-making power with respect to rules, fines, approvals, or contracts expects and receives covert payments from the consumer in exchange for the desired decision.”

This definition would capture many of the examples provided above: police officers giving speeding tickets, customs inspectors closing their eyes to valuable undeclared items, hospital staff making decisions about admissions and treatment of patients, safety inspectors approving a given location or activity — in exchange for a gift from the affected individual. Essentially the corrupt agent is “selling” a service or benefit which he or she controls to an individual who needs that service, contrary to the rules of the organization.

Now the researcher needs to specify a research question. It might be descriptive:

• "How frequent are instances of corrupt behavior by this description in setting X?"

It might be comparative:

• “How does institution X compare with institution Y with respect to the frequency of corrupt behavior by its agents?”

It might be explanatory:

• "Why do some institutions have higher rates of corrupt behavior than others?”

Or it might be policy-oriented:

• “What features of institutions can be introduced to reduce rates of corrupt behavior by the agents of the institution?”

The mechanisms theory is particularly relevant to methodology for at least the final three tasks. The background assumptions the researcher brings to his or her work about what a good explanation, a good policy design, or a good comparison ought to look like will strongly affect the ways in which he or she proceeds from this point further.

If the researcher adopts the simple empiricist model of explanation — find characteristics that appropriately co-vary with the dependent variable — then the research path is fairly clear:

• Identify a set of cases (don’t select on the dependent variable) and see whether there are correlations among institutional features and rates of corruption. (Ultimately this seems to be the prescription of King, Keohane, and Verba in Designing Social Inquiry: Scientific Inference in Qualitative Research.)

Or he or she might pursue the necessary-and-sufficient-condition version of the approach:

• Identify a set of cases (again with provisos about selection of cases) and see whether we can identify necessary and/or sufficient conditions using Mill’s methods or other analytical tools. (Gary Goertz describes strategies like these in Necessary Conditions: Theory, Methodology, and Applications.)

On the other hand, if the researcher adopts the causal-mechanisms approach — identify causal mechanisms and processes that affect the occurrence or frequency of the outcome of interest — then he or she will proceed differently. The researcher will examine the individual cases carefully, looking to identify the factors and mechanisms that appear to be involved in the outcomes of interest; he or she will then look to see whether there are common processes involved in multiple cases; and he or she will consider whether available theories of social processes are relevant to the explanation of the outcomes observed. (This is essentially the method pursued by McAdam, Tarrow, and Tilly in Dynamics of Contention.)

For example, the extensive theorizing and discussions of principal-agent problems in political science may shed light on concrete mechanisms through which corrupt behaviors are controlled in a variety of existing circumstances. The Principal wants the Agent to act according to the rules of the organization; the Agent is to some extent outside his observation and control. So what mechanisms of self-enforcement are available to lead the Agent to comply with the expectations of the Principal?

One mechanism of compliance that the Principal may consider is a Corrupt Practices Tipline, whereby consumers can anonymously report corruption by specific officers. This extends the Principal’s ability to gather information about the Agent’s behavior. The Agent, knowing that the Tipline exists, constrains his otherwise corrupt inclinations, and the incidence of corrupt practices declines.

Another possible approach for the Principal is to link the Agent's longterm rewards to his/her longterm success in assigned tasks. Jean Ensminger describes the practice of gifts of "bridewealth" in these terms, as a way in which cattle owners maintain the loyalty of their herders during the long periods of time that they are out of sight in the foraging areas (Making a Market: The Institutional Transformation of an African Society) Deferred compensation and stock options may play a similar role in the modern business organization.

Another mechanism that might be considered is selective investigation and enforcement. The Principal may know that many customs agents are accepting small gifts of money when evaluating customs declarations, and that a small number of these transactions involve high-value items and correspondingly high-value gifts. It might be sensible to focus investigation and enforcement on this smaller incidence of high-value transactions. Choosing this strategy may have the effect of significantly reducing “big corrupt transactions” while leaving “small corrupt transactions” essential unchanged.

A final mechanism that might be considered here (out of many possible avenues of investigation) is a cultural factor -- training, education, and inculturation. We might consider whether one cultural setting does a better job of preparing individuals to play honest roles in organizations than another based on the educational and formative experiences that are offered to them. This can provide the basis for a hypothesis about a causal mechanism leading to a high (or low) rate of corrupt behavior; and it might provide a basis for a possible policy intervention (workplace training to shift basic values).

This is one example of the way a concrete research strategy might evolve. The important point of the example is that the philosophical orientations described here — “simple empiricism”, “mechanisms theory” — lead researchers to structure their investigations in very different ways. The researcher who is attuned to causal mechanisms will focus his or her efforts on uncovering the concrete social pathways or processes through which a given pattern of behavior is either encouraged or discouraged; and the researcher will be led to consider comparative cases to see whether similar arrangements lead to similar patterns of behavior in the other cases. This suggests that the discussion of the ins and outs of causal mechanisms theory in philosophy of social science may in fact be an important contribution to social science methodology as well.