in “Family Structure, Institutions, and Growth: The Origins and Implications of Western Corporations,” stanford economist avner greif wrote [pgs. 308-09]:

“There is a vast amount of literature that considers the importance of the family as an institution. Little attention, however, has been given to the impact of the family structure and its dynamics on institutions. This limits our ability to understand distinct institutional developments — and hence growth — in the past and present. This paper supports this argument by highlighting the importance of the European family structure in one of the most fundamental institutional changes in history and reflects on its growth-related implications.

“What constituted this change was the emergence of the economic and political corporations in late medieval Europe. Corporations are defined as consistent with their historical meaning: intentionally created, voluntary, interest-based, and self-governed permanent associations. Guilds, fraternities, universities, communes, and city-states are some of the corporations that have historically dominated Europe; businesses and professional associations, business corporations, universities, consumer groups, counties, republics, and democracies are examples of corporations in modern societies….

“In tracing the origins of the European corporations, we focus on their complementarity with the nuclear family. We present the reasons for the decline of kinship groups in medieval Europe and why the resulting nuclear family structure, along with other factors, led to corporations. European economic growth in the late medieval period was based on an unprecedented institutional complex of corporations and nuclear families, which, interestingly, still characterizes the West. More generally, European history suggests that this complex was conducive to long-term growth, although we know little about why this was the case or why it is difficult to transplant this complex to other societies….

“The conquest of the Western Roman Empire by Germanic tribes during the medieval period probably strengthened the importance of kinship groups in Europe. Yet the actions of the church caused the nuclear family — consisting of a husband and wife, children, and sometimes a handful of close relatives — to dominate Europe by the late medieval period.

The medieval church instituted marriage laws and practices that undermined kinship groups…. The church … restricted marriages among individuals of the same blood (consanguineous marriages), which had historically provided one means of creating and maintaining kinship groups….

“European family structures did not evolve monotonically toward the nuclear family, nor was their evolution geographically or socially uniform (Greif, 2006, chap. 8).** By the late medieval period, however, the nuclear family was dominant. Even among the Germanic tribes, by the eighth century the term ‘family’ denoted one’s immediate family and, shortly afterwards, tribes were no longer institutionally relevant. Thirteenth-century English court rolls reflect that even cousins were as likely to be in the presence of nonkin as with each other. The practices the church advocated (e.g., monogamy) are still the norm in Europe. Consanguineous marriages in contemporary Europe account for less than 1 percent of the total number of marriages, in contrast to Muslim and Middle Eastern countries where such marriages account for between 20 and 50 percent per country (Alan H. Bittles, 1994). Among the anthropologically defined 356 contemporary societies of Euro-Asia and Africa, there is a large and significant negative correlation between the spread of Christianity (for at least 500 years) and the absence of clans and lineages; the level of commercialization, class stratification, and state formation are insignificantly correlated (Andrey V. Korotayev, 2003).”

the presence (or absence) of clans in societies is somehow connected to the mating patterns of societies. in fact, it seems to be that a whole range of kinship-based societal types is somehow connected to a whole range of mating patterns: the “closer” the mating patterns in a society, the more “clannish” it tends to be — the more distant the mating patterns, the less “clannish.”

so we see a spectrum of “clannish” societies ranging from the very individualistic western societies characterized by nuclear families and, crucially, very little inbreeding (cousin marriage, for instance) to very tribal arab or bedouin societies characterized by nested networks of extended families and clans and large tribal organizations and having very high levels of inbreeding (specifically a form of very close cousin marriage which increases the degree of inbreeding). falling somewhere in between these two extremes are groups like the chinese whose society is built mostly around the extended familiy but in some regions of china also clans — or the medieval scots (especially the highland scots) whose society for centuries was built around the clan (h*ck, they even coined the term!). these “in-betweener” groups are, or were, characterized by mid-levels of inbreeding (typically avoiding the very close cousin marriage form of the arabs).

furthermore, not only do the degrees of extended family-ness/clannish-ness/tribal-ness in societies seem to be connected to the degrees of inbreeding in those societies, the degrees of “clannism” also seem to be connected to the degree of inbreeding — the more inbreeding, the less civicness, the less democracy, the more corruption, and so on.

it’s not clear what exactly the mechanism(s) behind this inbreeding-leads-to-clannishness pattern is, but since mating patterns are involved, and mating is a very biological process, it seems likely (to me anyway) that the explanation is something biological — i.e. some sort or sorts of evolutionary process/es — like natural selection — resulting in different/different degrees of behavioral traits related to “clannism” in different populations with inbreeding acting as a sort of accelerant for those processes.

clans and clannism, then, are not things that peoples “fall back on” in the absence of a state as mark weiner suggests in The Rule of the Clan [kindle locations 106-108]:

“[I]n the absence of the state, or when states are weak, the individual becomes engulfed within the collective groups on which people must rely to advance their goals and vindicate their interests. Without the authority of the state, a host of discrete communal associations rush to fill the vacuum of power. And for most of human history, the primary such group has been the extended family, the clan.”

rather, people’s attachments to their extended families/clans/tribes — and, more importantly, their tendencies towards clannish behaviors — are likely innate behaviors. and those behaviors likely vary, on average, between populations since (long-term) mating patterns have varied — and, indeed, still vary — between populations.

such innate behaviors cannot be changed overnight — certainly not within a generation or even two (evolution does take some amount of time — but not, necessarily, extremely long amounts of time either) — and definitely not by simply changing a few laws here and there in the hopes of encouraging individualism. as avner greif grasped, although probably not fully because he’s likely missed the underlying biology of what he’s noticed, family structures need to be altered in order to effect changes to larger societal structures (again, all via tweaks to innate behavioral tendencies). and, again, that can’t be done overnight — as greif pointed out, the process in europe began in the early medieval period (with the church’s bans on cousin marriages) and didn’t really start to take hold until the late medieval period — i.e. a 500 year (or, conservatively, a ca. 25 generation) timeline.

see also: Cousin Marriage Conundrum by steve sailer and Why Europe? by michael mitterauer (in particular chapter 3) and Institutions and the Path to the Modern Economy: Lessons from Medieval Trade by avner greif.

**see “mating patterns in europe series” in left-hand column below ↓ for further details.

(note: comments do not require an email. busy clan members.)