{"id":13114,"date":"2012-02-01T08:00:38","date_gmt":"2012-02-01T13:00:38","guid":{"rendered":"http:\/\/spacingmontreal.ca\/?p=13114"},"modified":"2013-01-21T11:46:02","modified_gmt":"2013-01-21T16:46:02","slug":"the-regionalist-of-suburbs-genes-and-childhood-memories","status":"publish","type":"post","link":"https:\/\/spacing.ca\/montreal\/2012\/02\/01\/the-regionalist-of-suburbs-genes-and-childhood-memories\/","title":{"rendered":"The Regionalist: Of suburbs, genes and childhood memories"},"content":{"rendered":"
\"\"<\/a>
The so-called "prototypical average suburban American white middle-class family". Source: ThirdAge.com<\/figcaption><\/figure>\n

One of the most politically charged and ideologically loaded question in the field of metropolitan studies is that which concerns people’s motivations to live where they live within a given urban region – i.e., why some people choose the suburbs over the city, or the countryside over the suburbs, etc. In the US, this question has strong racial overtones because of the raging debate (outside of academia, mostly) as to whether black residential segregation in central cities is the result of blacks choosing to self-segregate.<\/p>\n

(It’s not, a least according to Harvard Economist Edward Glaeser<\/a>, but the debate still rages. Just type “blacks choose to live” in Google and you’ll see).<\/p>\n

Whatever the case may be, liberal (and neoliberal) economists believe that individuals are, by and large, autonomous, rational utility-maximizers. In other words, they assume that people make decisions – including their choice of residential location – based on a clear set of preferences (about such things as “peace and quiet”, “commuting time”, “privacy”, “access to recreational amenities”, etc.) which are themselves more or less idiosyncratic. Some people prefer the “bundle” of characteristics they find in the suburbs, and that is all there is to it.<\/p>\n

As an aspiring social engineer (I’m only half joking), I – as other urban planners and aspiring social engineers – am interested less in the “revealed preferences” of suburban dwellers as in how these preferences are formed. Are people’s residential locational preferences really idiosyncratic (i.e., somehow inherent to each person)? Or are they somehow influenced by the environment in which we are brought up, as suggested recently by a group of researchers at Laval University? To paraphrase the article from Le Soleil<\/em><\/a> which reports on the findings of these researchers, is there a “suburban gene”?<\/p>\n

Seeing as the article didn’t really answer the question – or attempt to answer it – I decided to do a bit of research myself. I remember distinctly that in planning school we were told that the best predictor of where one ends up when one has kids is the kind of (sub)urban environment where one grew up. Childhood memories supposedly trump all other preferences and “acquired tastes”. However, I couldn’t find the exact reference so I did a bit of research online and found this very interesting Australin “twin study”<\/a> which looks at the locational decisions of identical vs. non-identical twins to see 1) if twins’ choices are correlated and 2) if identical twins are more or less likely to make the same choice as non-identical twins.<\/p>\n

Notwithstanding the very real definitional difficulties involved in trying to determine what is urban, suburban and rural (an important subject which deserves its own separate post), the research design proposed by Whitfield and colleagues is an interesting one – and perhaps the only allowing us to really get at this question of “nature or nurture” in the formation of residential locational preferences. And the results are truly fascinating: both “additive genetic” and “shared environmental” influences are important, both the former becomes more important with age whereas the latter seems to become less influential (see Figure 1 below, reproduced from the article).<\/p>\n

\"\"<\/p>\n

So what does it all mean? Well first of fall, it is interesting to note that both nature and nurture matter<\/em>. But more interestingly: nature and nurture do not matter to the same degree at different stages of life<\/em> (assuming that older cohorts are different simply because they are older and not because of some unobserved variation between cohorts). Note that subsequently a Dutch study<\/a> and a Swedish study<\/a> replicated the same research design and that the first one did not find evidence of “additive genetic influences”; however, both studies did find that environmental influences from childhood were important determinants of residential location choice – especially for younger people.<\/p>\n

Some of you might ask (quite rightly): why does this matter from a policy, planning or social science perspective? One thing to observe, it seems to me, is that growing up in the absence of density replicates the absence of density. It follows, then, that we need to continue densifying the suburbs<\/em> because that is the only way we can make density more acceptable to the next generation<\/em>. Indeed, if “shared environmental influences” (i.e., environmental influences from childhood) explain 50% of the variance in residential location for people between 35 and 40 (i.e., people with young children or about to have them), then we need to influence the “shared environmental influences” of their children… so that they will find a wider range of options acceptable when they are making locational decisions 35 years from now.<\/p>\n

Just to be clear: I do not imply here that density is aesthetically better and that we need to impose these aesthetic views upon those who have “objectionable” sensibilities. People’s sensibilities are what they are and I am not judging them. I am simply observing that low density living is self-perpetrating – and that since we can’t afford (economically or ecologically) to live like the inhabitant of Aurora <\/em>in Azimov’s The Robots of Dawn<\/em>, we will need to tame density or way or another.<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

One of the most politically charged and ideologically loaded question in the field of metropolitan studies is that which concerns people’s motivations to live where they live within a given urban region – i.e., why some people choose the suburbs over the city, or the countryside over the suburbs, etc. In the US, this questionContinue reading “The Regionalist: Of suburbs, genes and childhood memories”<\/span><\/a><\/p>\n","protected":false},"author":5046,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_ef_editorial_meta_paragraph_assignment":"","_ef_editorial_meta_date_first-draft-date":"","_ef_editorial_meta_checkbox_needs-photo":"","_ef_editorial_meta_number_word-count":"","footnotes":""},"categories":[7831,7839,7842],"tags":[5,208,69,58,307],"class_list":["post-13114","post","type-post","status-publish","format-standard","hentry","category-community","category-neighbourhoods","category-urban-design","tag-planning","tag-regionalism","tag-social-trends","tag-banlieues","tag-united-states"],"acf":[],"yoast_head":"\nThe Regionalist: Of suburbs, genes and childhood memories - 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