Interaction between agents representing real world actors in computational models must be informed by knowledge about interaction processes occurring amongst real world actors. We propose the use of endorsements to implement the cognitive processes underlying the decisions that lead to interactions among agents. The main advantage in applying the idea of endorsements lies in the fact that they ...

Human voice pitch research has focused on perceptions of attractiveness, strength, and social dominance. Here we examine the influence of pitch on selection of leaders, and whether this influence varies by leadership role. Male and female leaders with lower-pitched (i.e., masculine) voices are generally preferred by both men and women. We asked whether this preference shifts to favor higher-pit...

• China and the United States should not see each other as competitors but rather as partners in the international energy market. The two countries have many opportunities for cooperation in joint exploration, production and shipping safety, development of new and renewable energies, and environmental protection. Energy security and cooperation should be put on the agenda of the US-China Strate...