* the wage gap has been "used in misleading ways to advance public policy agendas;"
* various factors explain the wage gap, such as women working fewer hours, women's greater tendency to work part time, take family or childcare leave, or take leave to care for an elder family member; these factors account for all but 5-7% of the wage gap;
* women still tend to choose lower paying jobs than do men;
* the research suggests (but for reasons of data limitation, cannot definitively conclude) that some or all of the remaining gap is explained by women's greater tendency to prefer non-wage compensation such as health insurance coverage.
The report states that the study "leads to the unambiguous conclusion that...the raw wage gap should not be used as the basis to justify corrective action. Indeed there may be nothing to correct."
Hiding the Truth About the Pay Gap Between Men and Women
An Analysis of Reasons for the Disparity in Wages Between Men and Women (pdf)