Collective arousal when reuniting after temporary separation in Tonkean macaques

Conflicts induce affiliative interactions among bystanders in a tolerant species of macaque (Macaca tonkeana)

(2010) Arianna De Marco et al.   ANIMAL BEHAVIOUR

Distress prevention by grooming others in crested black macaques

(2009) F. Aureli et al.   Biology Letters

Scream–embrace displays in wild black-horned capuchin monkeys

(2008) Jessica Lynch Alfaro   AMERICAN JOURNAL OF PRIMATOLOGY

Antiphonal exchanges in African elephants (Loxodonta africana): collective response to a shared stimulus, social facilitation, or true communicative event?

(2008) Katherine Leighty et al.   BEHAVIOUR

Social facilitation of fur rubbing behavior in white-faced capuchins

(2007) H. Meunier et al.   AMERICAN JOURNAL OF PRIMATOLOGY

A comparative study of conflict resolution in macaques: insights into the nature of trait covariation

(2007) Bernard Thierry et al.   ANIMAL BEHAVIOUR

Putting the Altruism Back into Altruism: The Evolution of Empathy

(2007) Frans B.M. de Waal   Annual Review of Psychology