Some data visualizations which might prove handy

So according to the above graph, sourced from the data which Eliza kindly tracked down, it looks like the trend started in the 70's and pretty much continued on a smooth path upward. That seems concurrent with the rise of serious feminism, the ERA, etc.

This data, however, sourced from Cornell's graduate schools, shows a lot of parallel lines. Male and female seem to be trending up and down at the same rates, and not converging. Note the drop in the early 90's -- economic slump? The first Gulf War?


















And this one, sourced from a document put out by the folks who do GRE testing, shows nearly the same trend lines, complete with a dip in the early 90's.