When do citizens want a dominant political leader? A prominent Conflict-Sensitivity Hypothesis suggests such preferences arise during intergroup conflict, yet it remains untested in a real war. We report results from an experiment embedded in a two-wave panel survey with 1,081 Ukrainians (811 re-interviewed) at the start of Russia’s 2022 invasion. We find that respondents generally value competence and warmth over dominance in leaders. Yet, war increases preferences for dominance and reduces preferences for warmth and competence. Emotional reactions to war also relate to leader trait preferences: Ukrainians who react with aggressive emotions display enhanced preferences for all leader traits, whereas fearful reactions leave trait preferences mostly unaffected. These findings advance our understanding of how war shapes leader preferences.

Twenty-first century urbanization poses increasing challenges for mental health. Epidemiological studies have shown that mental health problems often accumulate in urban areas, compared to rural areas, and suggested possible underlying causes associated with the social and physical urban environments. Emerging work indicates complex urban effects that depend on many individual and contextual factors at the neighbourhood and country level and novel experimental work is starting to dissect potential underlying mechanisms. This review summarizes findings from epidemiology and population-based studies, neuroscience, experimental and experience-based research and illustrates how a combined approach can move the field towards an increased understanding of the urbanicity-mental health nexus.

Human aggression has two important dimensions: within-group aggression and between-group aggression. Archer offers an excellent treatment of the former only. A full explanation of sex differences in aggression will fail without accounting for our history of inter-group aggression, which has deep evolutionary roots and specific psychological adaptations. The causes and consequences of inter-group aggression are dramatically different for males and females.

The adoption of experimental methods from economics, in particular script-enactment, performance-related payment, and the absence of deception, will turn experimental social psychology into a trivial science subject. Such procedures force participants to conform to a normative expectation that they must behave rationally and in accordance with their self-interest. The self-fulfilling prophecy inherent in these procedures makes it more difficult to conduct innovative social-psychological research.