The gender gap in political interest: Heritability, gendered political socialization, and the enriched environment hypothesis.

This article uses a behavioral genetics approach to study gender differences in expressed political interest, applying the enriched environment hypothesis to gendered political socialization. As girls are less stimulated to develop an interest in politics than boys, we theorize that these differences in the socialization environment reduce the expression of girls' genetic predispositions compared to boys', leading to a gender gap in the heritability of this trait. Analyses using data on German twins (11-25 years) demonstrate relevant differences by gender and age in heritability estimates.

Sleeping giant: .

Sleep research presents an important frontier of discovery for political science. While sleep has largely been neglected by political scientists, human psychology is inextricably linked with sleep and so political cognition must be as well. Existing work shows that sleep is linked to political participation and ideology, and that contentious politics can disrupt sleep.

Introduction to the Special Issue-Life Science in Politics: Methodological Innovations and Political Issues.

We introduce the Special Issue on Life Science in Politics: Methodological Innovations and Political Issues. This issue of is focused on the use of life science theory and methods to study political phenomena and the exploration of the intersection of science and political attitudes. This issue is the third in a series of special issues funded by the Association for Politics and the Life Sciences that adheres to the Open Science Framework for registered reports.

Political taste: Exploring how perception of bitter substances may reveal risk tolerance and political preferences.

Risk is endemic to the political arena and influences citizen engagement. We explore this connection by suggesting that risk-taking may be biologically instantiated in sensory systems. With specific attention to gender and gender identity, we investigate the connections between self-reported bitter taste reception, risk tolerance, and both of their associations with political participation.

Political ideology and diurnal associations .

Social scientists have begun to uncover links between sleep and political attitudes and behaviors. This registered report considers how diurnal morning-night associations relate to political ideology using data from the Attitudes, Identities, and Individual Differences Study, a large-scale online data collection effort. Measures encompass perceived cultural attitudes and social pressures regarding diurnal preferences and explicit and implicit measures of both morning-night attitudes and morning-night self-concepts.

Slimy worms or sticky kids .

Disgust is derived from evolutionary processes to avoid pathogen contamination. Theories of gender differences in pathogen disgust utilize both evolutionary psychological and sociocultural perspectives. Drawing on research that suggests that masculine and feminine gender identities are somewhat orthogonal, we examine how gender identity intersects with pathogen disgust.