New Caledonian crows reason about hidden causal agents.
Proc Natl Acad Sci U S A
; 109(40): 16389-91, 2012 Oct 02.
Article
em En
| MEDLINE
| ID: mdl-22988112
ABSTRACT
The ability to make inferences about hidden causal mechanisms underpins scientific and religious thought. It also facilitates the understanding of social interactions and the production of sophisticated tool-using behaviors. However, although animals can reason about the outcomes of accidental interventions, only humans have been shown to make inferences about hidden causal mechanisms. Here, we show that tool-making New Caledonian crows react differently to an observable event when it is caused by a hidden causal agent. Eight crows watched two series of events in which a stick moved. In the first set of events, the crows observed a human enter a hide, a stick move, and the human then leave the hide. In the second, the stick moved without a human entering or exiting the hide. The crows inspected the hide and abandoned probing with a tool for food more often after the second, unexplained series of events. This difference shows that the crows can reason about a hidden causal agent. Comparative studies with the methodology outlined here could aid in elucidating the selective pressures that led to the evolution of this cognitive ability.
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Resolução de Problemas
/
Cognição
/
Corvos
/
Comportamento de Utilização de Ferramentas
Limite:
Animals
Idioma:
En
Revista:
Proc Natl Acad Sci U S A
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
Nova Zelândia