Manhattan Institute fellow Kay Hymowitz in today's WSJ:

"Most people have heard that full-time working American women earn only 77 cents for every dollar earned by men. Yet these numbers don't take into account the actual number of hours worked. And it turns out that women work fewer hours than men.

According to the Labor Department, almost 55% of workers logging more than 35 hours a week are men. In 2007, 25% of men working full-time jobs had workweeks of 41 or more hours, compared with 14% of female full-time workers. In other words, the famous gender-wage gap is to a considerable degree a gender-hours gap."

MP: When comparing wages between two groups, there's always that pesky "ceteris paribus" condition to consider, and the gender activists never seem to understand that basic concept in favor of their "disparity-proves-discrimination" dogma.