The New Yorker reports a controversy in the field of social psychology concerning the fact that most of its academic members are political liberals - Democrats. The imbalance certainly exists, throughout the social sciences, and absolutely can be a source of bias in both theory and empirical findings.
I expect much of social psychology's liberal bias is like that exhibited by the PBS News Hour - not so much in what is said as in the choice of topics examined, of stories covered. That becomes a way to disguise bias, definitely less blatant.
A whimsical thought, perhaps I could become an affirmative action hire in a Psych. Department, their token conservative. I actually was an APA member briefly, decades ago.
