Published online by Cambridge University Press: 17 May 2016
Cooperation between politicians is often explained primarily by applying utilitarian concepts to coalition-building behavior. Usually, some direct or indirect advantage is held to be the main motive for cooperation, especially among those who are otherwise competitors. Drawing on sociobiological theory, this study presents an alternative approach in which truly altruistic motives may underlie and influence, as a biosocial substrate, even modern politics. This approach suggests that phenotypic similarities among individual politicians may play a role in the formation and stability of political alliances. To examine this hypothesis, physiognomic comparisons were made of the 65 delegates who gave speeches at the Nineteenth All-Soviet Party Congress of the Communist Party of the USSR, held in Moscow in 1988. The association between physiognomic similarity and expressions of verbal support was analyzed to test the hypothesis. Results suggest that speakers with faces more closely resembling that of the secretary-general were more likely to express verbal support for his policies than were others.