In most rich countries the supply of eligible blue-collar men does not match demand. Among black Americans, thanks to mass incarceration, it does not come close. For every 100 African-American women aged 25-54 who are not behind bars, there are only 83 men of the same age at liberty. In some American inner cities there are only 50 black men with jobs for every 100 black women, calculates William Julius Wilson of Harvard University. In theory black women could “marry out”, but few do: in 2010 only 9% of black female newly-weds married men of another race.
When men with jobs are in short supply, as they are in poor neighbourhoods throughout the rich world, any presentable male can get sex, but few women will trust him to stick around or behave decently. Kathryn Edin and Maria Kefalas, two sociologists, asked a sample of inner-city women of all races why they broke up with their most recent partner. Four in ten blamed his chronic, flagrant infidelity; half complained that he was violent.
Read it all from the Economist.