The Testosterone Tradeoff: Hormone Decrease Makes Better Fathers
It’s official: having a baby will lower your testosterone levels. If you’re a man, of course. And while this may seem scary and vaguely emasculating, it’s actually a good thing, according to a new study by researchers at Northwestern University. While testosterone is good for some activities, like competing for a mate, it’s not great for other activities, like nurturing a newborn baby. Here’s part of the abstract:
Read More »In species in which males care for young, testosterone (T) is often high during mating periods but then declines to allow for caregiving of resulting offspring. This model may apply to human males, but past human studies of T and fatherhood have been cross-sectional, making it unclear whether fatherhood suppresses T or if men with lower T are more likely to become fathers. …Our findings suggest that T mediates tradeoffs between mating and parenting in humans, as seen in other species in which fathers care for young. They also highlight one likely explanation for previously observed health disparities between partnered fathers and single men.
Radio in Progress: Political Word Watch
For an upcoming Freakonomics Radio episode, we’ve been doing some research on media bias. We came across this paper by Northwestern researchers, part of a growing body of work that uses computational analysis to turn political speech into data. Simply by examining speech patterns, the researchers were able to predict the political affiliation of U.S. Senators with 94% accuracy.
They broke down the nouns, adjectives, verbs, and adverbs most common to each party. For instance: liberals use the adjective “gay” while conservatives favor “homosexual.” Adverbs preferred by liberals include “disproportionately,” “ecologically” and “indiscriminately”; conservatives favor “morally,” “objectively” and “constitutionally.” Read More »
How Does High Unemployment Affect Wages of Those Who Remain Employed?
Of course higher unemployment generally raises unemployment among men, women and minorities. But how does it affect the wages of workers who keep their jobs? I believe a new paper that I coauthored with Jeff Biddle is the first to use large amounts of data to address this question about cycles in wage discrimination. Here’s the abstract:
Read More »Using CPS data from 1979-2009 we examine how cyclical downturns and industry-specific demand shocks affect wage differentials between white non-Hispanic males and women, Hispanics and African- Americans. Women’s and Hispanics’ relative earnings are harmed by negative shocks, while the earnings disadvantage of African-Americans may drop with negative shocks. Negative shocks also appear to increase the earnings disadvantage of bad-looking workers. A theory of job search suggests two opposite-signed mechanisms that affect these wage differentials. It suggests greater absolute effects among job-movers, which is verified using the longitudinal component of the CPS.
