To paraphrase Ben Kenobi, you will never find a more wretched hive of question begging and anti-empirical babble than the AEI.
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More generally, I reject the claim of the paper he cites (http://dx.doi.org/10.1017/S0140525X14000430) that changing partisan affiliation among social psychologists is proof that the field has been overrun with leftists, who are driving out all the conservatives via active discrimination, and who have an agenda of proving that conservatives are evil/stupid/lazy/intolerant/....
There are many possible alternative explanations:
* Perhaps the social psychologists’ views have remained consistent while the US Republican party has become more radicalized, causing former political moderates to now fall in naturally with the Democratic party.
* Perhaps academia as a whole or social psychology as a field has lost status or become less desirable as a career, and folks whose ideological outlook emphasizes money and status have decided to go into industry more than before.
* Perhaps the Republican party’s cuts to education funding in general or diversion of funding away from social sciences toward STEM fields (including cutting direct funding for public institutions, cuts to research funding, etc.), attempt to exert governmental bureaucratic control over universities, etc. has changed the minds of formerly conservative-leaning academics away from supporting the GOP.
* Perhaps social psychologists or other social scientists have the perception that Republican lawmakers are disregarding the direct lessons of social science and thus framing policies which are “bad” for some reason independent of ideological bias.
* Perhaps the easy availability of money at institutions such as the AEI, the Heritage Foundation, etc. has swayed conservative-leaning social scientists to give up on universities and peer-reviewed research, and follow the money to these so-called think tanks.
etc.