This is the first post in a new series where I highlight plots that I came across in scientific literature that will be interesting for a broad audience. Today I look at why poor stay poor (economic inequality), why you should move to Italy but not Singapore (labor productivity), and why buying processed foods costs you more than you think (microbiome diversity).
Plot 1. Economic connectedness is by far the most impactful way to increase economic mobility (in the US) Economic connectedness is by far the most impactful way to increase economic mobility. Figure from Social capital I: measurement and associations with economic mobility This plot comes from the paper Social capital I: measurement and associations with economic mobility which, already from the title, is absolutely a stunning read. The researchers looked at what are drivers of upward economic mobility (in the US!) and concluded that one that matters by far the most is the relative share of high socioeconomic status (SES) friends, a quantity they termed economic connectedness. They find that if low-income children had the same type of friends as high-income children do, they would earn 20% more on average in adulthood! So what does this mean? You, dear reader, are probably relatively wealthy or have a good chance of being so in the future so if you care about economic inequality (and you should, because in the long run it hurst everybody!) go ahead and make friends with everyone, especially with people of relatively low SES! Equally stunningly, many places which you would have thought are great destinations to elevate one’s or one’s family SES (e.g., Bay Area) are performing very poorly on economic connectedness, and consequently you would be better off moving to plenty of other places, many of which are much cheaper to live in. If you did not think segregation or gentrification is a problem, now you know it is. You can find the map of economic connectedness in the US here: socialcapital.org.
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