title: Human cooperation: the race to give.
abstract: An analysis of online charity donations reveals that, when males make large donations to attractive female fundraisers, other males respond in kind, providing field evidence for 'competitive altruism' in which helpful acts are used as a display to attract partners.
authors.affiliation: Centre for Behaviour and Evolution, Institute of Neuroscience, Newcastle University, Newcastle, UK. Electronic address: Gilbert.Roberts@ncl.ac.uk.
authors.forename: Gilbert
authors.initials: G
authors.lastname: Roberts
mesh_terms: D003163:Competitive Behavior; D005260:Female; D037921:Gift Giving; D006801:Humans; D008297:Male; D012725:Sexual Behavior