1 Results from regressing GSS variable identifier POLVIEWS on a constant and years of education.
2 Chief problem with the simple approach: The well-educated are richer, and the rich are more conservative. As a result, income conceals some of education’s effect. If you regress POLVIEWS on a constant, years of education, and log family income, one year of education makes you .028 units more liberal – double the estimate from the simple approach. Further correcting for race, sex, age, and year, one year of education makes you .024 units more liberal.
3 Results from regressing GSS variable identifier PARTYID on a constant and years of education, excluding respondents who support third parties.
4 If you regress PARTYID on a constant, years of education, log family income, race, sex, age, and year, one year of education makes you .029 units more Republican.
5 To surmount this “zero-sum” problem, peers must have non-linear effects in the right direction. As Burke and Sass 2013, p.58 remark, “[P]olicy can hope to generate aggregate achievement gains only if peer effects are nonlinear and therefore non-zero-sum in their impact on achievement.” See also Lavy and Schlosser 2011, p.4. Hoxby 2002 discusses the complex empirics of non-linear peer effects.
6 For overviews of the research and some basic results, see e.g. Burden 2009, Nagler 1991, and Powell 1986.
7 The most notable naysayers: Kam and Palmer 2008, p.612 reports higher education has no effect on turnout after fully accounting for “preadult experiences and influences in place during the senior year of high school.” Tenn 2007 finds immediately after gaining an extra year of education, individuals are no more likely to vote than they were in the previous year. Sondheimer and Green 2010 examines three sets of experimental evidence on education and turnout.
8 Burden 2009 reviews the contrast between micro- and macro-level evidence, and summarizes the top contending “offsetting factors.”
9 The leading defenses of the relative education theory are Tenn 2005, and Nie et al. 1996.