title: Children's use of interventions to learn causal structure.
abstract: Children between 5 and 8 years of age freely intervened on a three-variable causal system, with their task being to discover whether it was a common cause structure or one of two causal chains. From 6 or 7 years of age, children were able to use information from their interventions to correctly disambiguate the structure of a causal chain. We used a Bayesian model to examine children's interventions on the system; this showed that with development children became more efficient in producing the interventions needed to disambiguate the causal structure and that the quality of interventions, as measured by their informativeness, improved developmentally. The latter measure was a significant predictor of children's correct inferences about the causal structure. A second experiment showed that levels of performance were not reduced in a task where children did not select and carry out interventions themselves, indicating no advantage for self-directed learning. However, children's performance was not related to intervention quality in these circumstances, suggesting that children learn in a different way when they carry out interventions themselves.
authors: School of Psychology, Queen's University Belfast, Belfast, Northern Ireland BT7 1NN, UK. Electronic address: t.mccormack@qub.ac.uk.
authors: Teresa
authors: T
authors: McCormack
authors: Division of Psychology and Language Sciences, University College London, London WC1E 6BT, UK.
authors: Neil
authors: N
authors: Bramley
authors: School of Psychology, University of Leicester, Leicester LE1 9HN, UK.
authors: Caren
authors: C
authors: Frosch
authors: Division of Psychology and Language Sciences, University College London, London WC1E 6BT, UK.
authors: Fiona
authors: F
authors: Patrick
authors: Division of Psychology and Language Sciences, University College London, London WC1E 6BT, UK.
authors: David
authors: D
authors: Lagnado
mesh_terms: D001499:Bayes Theorem; D002648:Child; D002657:Child Development / Q000502:physiology*; D002675:Child, Preschool; D002755:Choice Behavior; D005260:Female; D006801:Humans; D008297:Male; D018794:Problem-Based Learning / Q000379:methods*
keywords: Active learning; Bayesian modelling; Causal learning; Causal structure; Scientific learning; Self directed learning