Why the "Rich" Are Getting Richer...according to Professor Greg Mankiw

Harvard Economics Professor Greg Mankiw writes in The New York Times today about the wealth gap in America Today. Mankiw says...

the superrich have been getting an increasing slice of the economic pie. In 1980, the top 0.01 percent of the population had 0.87 percent of total income. By 2006, their share had more than quadrupled to 3.89 percent, a level not seen since 1916.

Part of the explanation for the growing wealth gap, according to Mankiw, is education, or lack there of. Mankiw states that while technology continues to progress rapidly, America's educational achievement has not...

According to Professors Goldin and Katz, for the past century technological progress has been a steady force not only increasing average living standards, but also increasing the demand for skilled workers relative to unskilled workers. Skilled workers are needed to apply and manage new technologies, while less skilled workers are more likely to become obsolete.

For much of the 20th century, however, skill-biased technological change was outpaced by advances in educational attainment. In other words, while technological progress increased the demand for skilled workers, our educational system increased the supply of them even faster. As a result, skilled workers did not benefit disproportionately from economic growth.

But recently things have changed. Over the last several decades, technology has kept up its pace, while educational advancement has slowed down. The numbers are striking. The cohort of workers born in 1950 had an average of 4.67 more years of schooling than the cohort born in 1900, representing an increase of 0.93 year in each decade. By contrast, the cohort born in 1975 had only 0.74 more years of schooling than that born in 1950, an increase of only 0.30 year a decade.