After World War II, the gap began to widen, peaking at roughly 4.5 to 1 in the mid-1960s. By 1975 the ratio had declined to 3 to 1, and by 2005 to less than 2 to 1. The researchers interpret this...

After World War II, the gap began to widen, peaking at roughly 4.5 to 1 in the mid-1960s. By 1975 the ratio had declined to 3 to 1, and by 2005 to less than 2 to 1. The researchers interpret this trend as an increase in women’s status since the late 1960s.