title: Making sense by making sentient: effectance motivation increases anthropomorphism.
abstract: People commonly anthropomorphize nonhuman agents, imbuing everything from computers to pets to gods with humanlike capacities and mental experiences. Although widely observed, the determinants of anthropomorphism are poorly understood and rarely investigated. We propose that people anthropomorphize, in part, to satisfy effectance motivation-the basic and chronic motivation to attain mastery of one's environment. Five studies demonstrated that increasing effectance motivation by manipulating the perceived unpredictability of a nonhuman agent or by increasing the incentives for mastery increases anthropomorphism. Neuroimaging data demonstrated that the neural correlates of this process are similar to those engaged when mentalizing other humans. A final study demonstrated that anthropomorphizing a stimulus makes it appear more predictable and understandable, suggesting that anthropomorphism satisfies effectance motivation. Anthropomorphizing nonhuman agents seems to satisfy the basic motivation to make sense of an otherwise uncertain environment.
authors.affiliation: Department of Psychology, Harvard University, USA. waytz@wjh.harvard.edu
authors.forename: Adam
authors.initials: A
authors.lastname: Waytz
authors.forename: Carey K
authors.initials: CK
authors.lastname: Morewedge
authors.forename: Nicholas
authors.initials: N
authors.lastname: Epley
authors.forename: George
authors.initials: G
authors.lastname: Monteleone
authors.forename: Jia-Hong
authors.initials: JH
authors.lastname: Gao
authors.forename: John T
authors.initials: JT
authors.lastname: Cacioppo
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D001921:Brain / Q000033:anatomy & histology; D001931:Brain Mapping / Q000379:methods / Q000523:psychology; D003201:Computers; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D009042:Motivation / Q000502:physiology*; D009769:Object Attachment; D011582:Psychological Theory; D012371:Robotics; D012919:Social Behavior; D012931:Social Environment; D012938:Social Perception; D055815:Young Adult