This is old, but in catching up on my Nate Silver reading, I came upon this interesting account of new research:
Having only daughters makes parents more liberal. Silver quotes this commentary on the study:
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Because parents invest a significant amount of themselves in their children, the authors argue, the anticipated and actual struggles that offspring face, and the public policies that tackle those, matter to those parents. . . The authors demonstrate that people who parent only daughters are more likely to hold feminist views (for example, to favor affirmative action).
Seems almost self-evident.
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