Which is more dangerous: a gun or a swimming pool? How much does campaign spending really matter? What truly made crime fall in the 1990s? These are the sort of questions raised—and answered—in the new book Freakonomics: A Rogue Economist Explores the Hidden Side of Everything. In yesterday's excerpt, authors Steven D. Levitt and Stephen J. Dubner explored the impact of a child's first name, particularly a distinctively black name. Today's excerpt shows how names work their way down the socio-economic ladder.
The California names data tell a lot of stories in addition to the one about the segregation of white and black first names. Broadly speaking, the data tell us how parents see themselves—and, more significantly, what kinds of expectations they have for their children.
The actual source of a name is usually obvious: There's the Bible, there's the huge cluster of traditional English and Germanic and Italian and French names, there are princess names and hippie names, nostalgic names and place names. Increasingly, there are brand names (Lexus, Armani, Bacardi, Timberland) and what might be called aspirational names. The California data show eight Harvards born during the 1990s (all of them black), 15 Yales (all white), and 18 Princetons (all black). There were no Doctors but three Lawyers (all black), nine Judges (eight of them white), three Senators (all white), and two Presidents (both black).
But how does a name migrate through the population, and why? Is it purely a matter of zeitgeist, or is there a more discernible pattern to these movements?
Consider the 10 most popular names given to white girls in California in 1980 and then in 2000. A single holdover: Sarah. So, where do these Emilys and Emmas and Laurens all come from? Where on earth did Madison come from? It's easy enough to see that new names become very popular very fast—but why?
Let's take a look at the top five girls' names and top five boys' names given during the 1990s among high-income white families and low-income white families, ranked in order of their relative rarity in the opposite category. Now compare the "high-end" and "low-end" girls' names with the most popular ones overall from 1980 and 2000. Lauren and Madison, two of the most popular high-end names from the 1990s, made the overall top-10 list in 2000. Amber and Heather, meanwhile, two of the overall most popular names from 1980, are now among the low-end names.
There is a clear pattern at play: Once a name catches on among high-income, highly educated parents, it starts working its way down the socioeconomic ladder. Amber, Heather, and Stephanie started out as high-end names. For every high-end baby given those names, however, another five lower-income girls received those names within 10 years.
Many people assume that naming trends are driven by celebrities. But how many Madonnas do you know? Or, considering all the Brittanys, Britneys, Brittanis, Brittanies, Brittneys, and Brittnis you encounter these days, you might think of Britney Spears; but she is in fact a symptom, not a cause, of the Brittany/Britney/Brittani/Brittanie/Brittney/Brittni explosion—and hers is a name that began on the high end and has since fallen to the low. Most families don't shop for baby names in Hollywood. They look to the family just a few blocks over, the one with the bigger house and newer car. The kind of families that were the first to call their daughters Amber or Heather, and are now calling them Alexandra or Katherine. The kind of families that used to name their sons Justin or Brandon and are now calling them Alexander or Benjamin. Parents are reluctant to poach a name from someone too near—family members or close friends—but many parents, whether they realize it or not, like the sound of names that sound "successful."
Once a high-end name is adopted en masse, however, high-end parents begin to abandon it. Eventually, it will be considered so common that even lower-end parents may not want it, whereby it falls out of the rotation entirely. The lower-end parents, meanwhile, go looking for the next name that the upper-end parents have broken in.
So, the implication is clear: The parents of all those Alexandras and Katherines, Madisons and Rachels should not expect the cachet to last much longer. Those names are just now peaking and are already on their way to overexposure. Where, then, will the new high-end names come from? Considering the traditionally strong correlation between income and education, it probably makes sense to look at the most popular current names among parents with the most years of education. Here, drawn from a pair of databases that provide the years of parental education, is a sampling of such names. Some of them, as unlikely as it seems, may well become tomorrow's mainstream names. Before you scoff, ask yourself this: Do Aviva or Clementine seem any more ridiculous than Madison might have seemed 10 years ago?
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