For the greater part of human history, political behaviors, values, preferences, and
institutions have been viewed as socially determined. Discoveries during the 1970s that …

In the classical twin design, researchers compare trait resemblance in cohorts of identical
and non-identical twins to understand how genetic and environmental factors correlate with …

The violent actions of a few extremists can alter the course of history, yet there persists a
yawning gap between the potential impact of these individuals and what we understand …

Originally developed to explain cultural variation in moral judgments, moral foundations
theory (MFT) has become widely adopted as a theory of political ideology. MFT posits that …

Debate surrounding the issue of inequality and hierarchy between social groups has
become increasingly prominent in recent years. At the same time, individuals disagree about …

A growing literature in psychology shows that human voice pitch—perceived “highness” or
“lowness” as determined by the physiology of the throat—influences how speakers are …

A foundational question in the social sciences concerns the interplay of underlying causes in
the formation of people's political beliefs and prejudices. What role, if any, do genes …

Recent research has demonstrated that genetic differences explain a sizeable fraction of the
variance in political orientations, but little is known about the pathways through which genes …

The primary assumption within the recent personality and political orientations literature is
that personality traits cause people to develop political attitudes. In contrast, research relying …

In 14 studies, we tested whether political conservatives' stronger free will beliefs were linked
to stronger and broader tendencies to moralize and, thus, a greater motivation to assign …