In 2007 Harvard researcher Robert Putnam published the results of his
long-awaited research which showed that increased diversity lead to a reduction
in social capital. Putnam’s massive
study concluded that:
…inhabitants of diverse communities tend to withdraw from
collective life, to distrust their neighbors, regardless of the colour of their
skin, to withdraw even from close friends, to expect the worst from their
community and its leaders, to volunteer less, to give less to charity and work
on community projects less often, to register to vote less, to agitate for
social reform more, but have less
faith that they can actually make a difference, and to huddle unhappily in
front of the television (2007: 150).
In the
presence of diversity, we “hunker down”, he argued, “we pull in like a turtle”
(2007: 149).
These results have been echoed in
other studies as well. For example,
Dronkers in his study of immigrant neighborhoods in the Netherlands finds that:
1) neighborhoods’ ethnic diversity reduces
individual trust in neighborhoods; 2) those with neighbors of a different
ethnicity have less trust in neighborhoods and neighbors 3) a substantial part
of the effect of neighborhoods’ ethnic diversity on individual trust can be
explained by the higher propensity of having neighbors of a different
ethnicity. We conclude that ethnic diversity can have a negative effect on
individual trust. (Dronkers 2008)
And
Hero concurs that “When we considered the interaction of diversity and social
capital, a powerful dampening effect of the former on the latter was shown”
(Hero 2007: 157).
The explanations for the findings of
Putnam’s and other similar studies have usually been couched in moral
terms: liberals see it as confirmation
of persistent prejudice; conservatives see it as a confirmation that
multiculturalism is destructive to society.
Both sides see social capital as an important good in society, but they
differ in that whereas liberals believe that social capital and diversity are
compatible, and that the promotion of social capital is frustrated by
prejudice, conservatives believe that social capital and diversity are
incompatible and that the good of social capital can only be achieved by
reducing diversity through integration.
My hope here is to resolve this dispute by offering a non-moral
explanation of the mechanism by which social capital is created and maintained,
and thereby come to understand how this mechanism is in turn undermined, so
that ultimately we can come to judge the compatibility of social capital and
diversity.
In his influential account, Coleman
wrote that “Social capital is defined by its function” (Coleman 1988: 96). If so, it might be fruitful to consult the voluminous
philosophical literature that has been dedicated to the understanding of the
notion and nature of natural function, and see how this may be applied to
social capital. The thought is that this
literature might provide insight into the distinctive function of social
capital: what is its function, how it
performs its function, and how it fails to perform it. Specifically, I intend to apply the
biosemantic framework developed by philosopher Ruth Millikan to these ends. There are other accounts of function in the
literature, but Millikan’s is specifically geared towards understanding the
nature of interpersonal cooperation and communication, and as such is equipped
with a set of conceptual tools applicable to the study to social capital. A secondary goal of the paper then is to
introduce the biosemantic approach to sociologists and political scientists who
might otherwise be unfamiliar with it.
My plan is to first review the tenets of biosemantics and then show how
it may be applied to the debate over social capital. I do not intend to supplant other approaches
to the understanding of social capital, only to provide a conceptual foundation
for them, or add an additional piece to the puzzle that is a very complex phenomenon.
I do not claim that the biosemantic
approach alone can explain all the myriad phenomena that social capital is
invoked to explain, only why cultural diversity causes a decline.
I. Biosemantics
Millikan’s great insight in her
landmark Language, Thought, and Other
Biological Categories was to look at the evolutionary origins of language,
thought, and behavior and to apply this framework to the philosophical problems
of mind and semantics. Starting from a
naturalistic account of the phenomena of teleological function, Millikan is
able to move up into the spheres of intentionality, meaning, representation,
and interpersonal communication. For
Millikan, functional items like hearts and kidneys get their functions not by
what they currently do, or have a disposition to do, but by possessing a
certain history. Specifically, there must be a history of both
reproduction and selection. “Reproduction”
is to be understood counterfactually as had the ancestor differed in some
respect, the descendent would likewise differ in that respect. Picture the way the words on the paper that
comes out of a copying machine are copies of the words on the original, or the
way that children’s genes are copies of their parents’ genes, or the
performance of social customs such as shaking hands or bowing when greeting are
copies of previous performances of those gestures, or the way manufactured
items on an assembly line are copies of a blueprint or prototype (1984: 23).[1]
The second requirement is that the
item must be selected for the possession of a feature. “Selection” here is to be understood not as
conscious choice, but in the Darwinian sense that the reason an item or feature
exists is that this feature has correlated sufficiently often with some effect,
and this effect helped account for its reproduction as opposed to things
lacking this effect (1993: 35). The
effect in question is the proper function of the item.[2] In the case of biological items such as
organs or inherited behaviors such as mating displays, the proper function is
that effect an item’s ancestors had that accounted for the proliferation of the
genes responsible for its production (1993: 14). Put more intuitively, a specific animal
mating display, for example, has proliferated because this behavior corresponds
more positively with the ability to attract mates than some other
behavior. This behavior was selected by
natural selection over some other behavior at least in part because of that
correlation; those who performed this display were more likely to attract mates,
and thus to pass these behavior-producing genes into their progeny, than those
who didn’t. Hearts, to take another
example, have pumping blood as their proper function not because they currently
pump blood, or have the capacity to pump blood, but because the genes that
produce hearts are copies of an ancestor’s genes, and the reason these genes
have proliferated is because they correlate with the production of things that
pump blood (1993: 35). Thus diseased,
malformed, and damaged hearts that lack the ability to pump blood still have
the pumping of blood as their proper function because the genes that produced
them are copies of genes that have proliferated because they sufficiently often
produce things the pump blood, whether or not the current item in question has
this ability. Many mating displays fail
to perform their mate-attracting function, maybe they even fail more frequently
than they succeed, but they succeed often enough to make it worthwhile to pass on
the genes.
It is not only the case of the
copying and selection of genes that thereby
have proper functions in this sense. The
account of selection merely requires that a feature be reproduced because it
correlates positively with some effect more positively than if it were lacking
this feature. Thus things may have
proper functions that exist for reasons other than natural selection working on
genes. Manufactured artifacts are also
copied and selected because they produce some effect (1984: 28). Hammers have driving nails as their proper function
because it was the ability to drive nails that has lead to the copying of these
artifacts by humans in manufacture. In
addition to innate behaviors, a learned behavior can have a proper function if
it is reproduced because it leads to a reward; it being the function of the
behavior to bring about this result.
Behaviors learned through trail and error or through imitation, for
example, fall into this category (1984: 28).
When a child first learns to imitate (reproduce) light-switch-flipping
behavior because they have observed the correlation between
light-switch-flipping and room illumination, the proper function of this
behavior is to illuminate the room. The proper
function of taking the bus is to arrive at ones destination; the proper function
of opening the refrigerator is to get food, and so on.[3] Likewise, saying/reproducing language items
such as words, sentence syntax, phonetic accents, and so on have proper functions;
the child learns to iterate tokens of “ba-ba” because this correlates
sufficiently often with the reception of a bottle and thus food.
In some cases two items have a
common purpose that has been achieved in the past by each party reproducing
their share in a pattern of behavior.
This serves to coordinate each one to the other in order to cooperate in
the achievement of this common purpose. For example, drivers have a common interest in
avoiding collisions, so, in the United
States and many other countries, a convention
was instituted whereby drivers drive on the right. Drivers thus coordinate with one another in
order to cooperate in the achievement of their common goal. Other countries of course may have instituted
the similar convention of driving on the left.[4] Producing and maintaining this mutual
adaptation whereby each party contributes to the shared goal is the
“stabilizing” function of the item or behavior; it is what keeps both parties
to the coordination responding in standard ways (1984: 31, 2005: 54).[5]
One such case are the reproduced
patterns involved in certain animal mating dances where both the producer of
the dance and its audience (called the “consumer”) have a common purpose and
have come up with a convention in order to coordinate with one another in order
to reach it. The intended audience “expects”
a dance of a certain form to be performed, its conventions followed, and the
producer expects the audience to react in a standard way to its performance. Because consumers often enough respond to the
dances in a way that benefits them, producers are encouraged to keep
producing. And because responding to the
dances aids consumers, they are likely to keep responding in the standard way. Despite the fact that often the dance may
fail in its purpose, it is more likely to succeed than some random motions, and
that makes it worthwhile to keep it in use.
Language devices have their
stabilizing functions as well. For
instance, if the listeners of an utterance reacted randomly to ones speech it
would be pointless to continue to make those utterances, and the speaker would
soon stop. Likewise, if speakers’
utterances never communicated useful information, or if the hearer was too
often manipulated against their best interest, hearers would soon stop
believing what is said (1984: 31). Speakers
and listeners thus arrive at a convention to which each is attuned in order for
each of them to succeed in performing the stabilizing function. Speakers must produce forms that the listener
is prepared to accept, and the intended audience, the consumers of the language
form, must react in ways that reinforce the speaker in so speaking. For instance, it is a convention amongst
English speakers that we utter “dog” when trying to discuss dogs. Likewise, it is a convention amongst English writers that we write the characters d, o,
and g in order when we are trying to
discuss or refer to dogs. Ones hearer
must be coordinated with this convention and so be prepared to respond to the
utterance of “dog” such as to know that it refers to dogs. It will do no good to utter “dog” amongst
those who are not coordinated with the speaker by the possession of a common
linguistic history so as to respond to this utterance in a predictable
way.
Speakers within a language community
are, simply, adapted to an environment in which hearers are
responding, sufficiently often, to the forms speakers produce in ways that
reinforce these speaker productions. Correlatively, hearers in the community
are, simply, adapted to conditions under which speakers, sufficiently
often, produce these language forms in circumstances such that making
conventional responses to them aids those hearers (2005: 57).
Thus, people continue to utter “dog” in order to draw attention to dogs only insofar as listeners often enough continue to respond to this utterance appropriately. It is in both the speaker’s and hearer’s interest to continue to respond in this way since the hearer is liable to gain useful information and the speaker is liable to meet his goal of spreading such information. "Dog" has been copied from person to person for generations because it is successful in doing so in relation to dogs. The stabilizing function a linguistic form performs is one of the aspects of the term’s meaning (2005: 58).
There are ways of communicating
besides through the use of spoken human language. There is the common phenomenon of non-spoken communicating
signs that have been designed to coordinate between producer, consumer, and
environment. In these cases items with stabilizing functions may attain
intentionality. To use a now classic
example, after finding a source of nectar, a honey bee returns to the hive and
does a dance. Other bees watch the dance
and so learn the location of the nectar relative to the sun and the hive. They then fly off in the direction of the
nectar in order to retrieve it and bring it back to the hive. Millikan calls items such as the dance of the
honey bee “intentional icons” because they are about the location of nectar (1984: ch. 6).[6] In order to be an intentional icon the sign
in question must, firstly, be able to vary in accordance with variations in the
environment. Secondly, it must be a
function of the producer of the sign to produce it for a consumer in accordance
with certain mapping rules by which the sign maps its intended environmental
feature. Finally, it must be a function
of the intended consumers of the icon to use it in the way the mapping relation
indicates (1993: 106).
For example, the form of the dance
of the honey bee varies depending on the location of the nectar relative to the
sun and the hive, it is produced by the dancing bee in order to indicate this
relation, and the watching bees then use the mapping relation indicated to
direct their direction of flight. In
another example, soldiers wear their ranks on their uniforms where they can be
clearly perceived by their intended audience. The insignia varies according to
the soldiers rank and both tells consumers what the rank is and so prescribes
appropriate behavior.[7] Finally, beavers slap their tails on the water
when danger is near in order to tell listening beavers of its presence. The slaps vary with the time and place of
danger, and the listening beavers use this icon to initiate hiding or other
avoidance behaviors.[8]
For
each item that possesses a function in the sense described here there will be
an explanation of how the item has historically managed to perform this
function. This explanation will mention how the structure of the item in
question has managed to “do its job” historically, what conditions were in
effect, what the environment was like that allowed the item to successfully
perform it function. Millikan calls such
an explanation a “Normal” explanation and the conditions that have historically
held in order for the item to succeed in performing its function “Normal” conditions (1984: 33). “Normal” is
capitalized to prevent confusion that might occur if one was to think that Normal conditions are average or frequent since “normal”
often has that connotation.[9] For example, just think of how few sperm
manage to perform their function of fertilizing an egg, or how infrequently the
skull needs to perform its function of protecting the brain from impacts. It might be helpful to think of Normal conditions as “activation conditions” or “enabling
conditions.” In abNormal conditions an
item will fail to perform its function, or at least fail to accomplish it in
accordance with a Normal explanation. Diseased hearts are in abNormal conditions,
being underwater for extended periods an abNormal condition for otherwise
healthy lungs, and whatever it is that prevents a specific sperm from
fertilizing an egg is also an abNormal condition.
[1]
Biological organs such as hearts, and manufactured items such as hammers, and
innate behaviors such as mating displays are not reproductions of one another since these items are not
copied from one another: hearts are not
copied from other hearts, innate mating displays are not copies of other mating
displays. Instead, items such as hearts
and mating displays are produced by genes that are indeed reproductions of one
another. My heart and my parents’
hearts--and your heart, and the mating displays that are the result of the same
genes, and all the hammers that are reproductions of the same prototype, are
all members of what Millikan calls “higher-order reproductively established
families” (1984: 25).
[2] Millikan
calls this type of function a “direct proper functions,” but not needing to use
any of Millikan’s other distinctions in my current purpose, I will just refer
to them as an item’s proper function, unless I specify otherwise (1984: 25).
[3] I am
assuming that the reason these behaviors are being reproduced is because they
have lead to the specified result. One
might be taking the bus not because it has corresponded in the past with
arriving at ones destination. Such
behaviors can have “derived proper functions” in addition to direct proper
functions (1984: 39). The nature of
derived proper functions is not needed for the thesis of this paper.
[4] The fact
that neither driving on the right nor driving on the left is superior to the
other in the performance of this function, and that the convention thereby
spread merely by the weight of precedent, is what makes it a convention
(2005:7).
[5]
Elsewhere Millikan refers to these as “conventional functions” (2004: 105),
“coordination conventions” (2005: 9, 40), or “cooperative functions” (2005:
58).
[6] These
are called “intentional signs” in Varieties
of Meaning (2004).
[7] This is
what Millikan calls a “pushmi-pullyu” representation based on the creature from
Dr. Doolittle. Pushmi-pullyus have two faces--they communicate facts, and
direct behavior (2005: ch. 9).
[8] These
last two cases are examples of what Millikan calls “intentional signals” (1984:
116).
[9] In
subsequent writings Millikan stopped capitalizing “Normal,” and recently has
been calling Normal conditions “historically enabling” conditions (2000: 62)
and Normal explanations “normal mechanisms” (2004: 85). I still find the capitalization helpful.
