Infants' reasoning about samples generated by intentional versus non-intentional agents.

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Elizabeth Attisano, Stephanie Denison

Author Information

Elizabeth Attisano: Department of Psychology, University of Waterloo, Waterloo, Ontario, Canada. ORCID
Stephanie Denison: Department of Psychology, University of Waterloo, Waterloo, Ontario, Canada. ORCID

PMID: 32749080 DOI: 10.1111/infa.12320

The current experiments investigate how infants use goal-directed action to reason about intentionally sampled outcomes in a probabilistic inference paradigm. Older infants and young children are flexible in their expectations of sampling: They expect random samples to reflect population statistics and non-random samples to reflect an agent's preferences or goals (Kushnir, Xu, & Wellman, 2010; Xu & Denison, 2009). However, more recent work shows that probabilistic inference comes online at approximately 6 months (Denison, Reed, & Xu, 2013; Kayhan, Gredebäck, & Lindskog, 2017; Ma & Xu, 2011; Wellman, Kushnir, Xu, & Brink, 2016), and thus, these sampling assumptions can be investigated at the age probabilistic reasoning first emerges. Results indicate that 6-month-old infants expect a human agent to sample in accord with their goal and do not expect the same of an unintentional agent-a mechanical claw. By 9.5 months, infants expect the mechanical claw to sample in accord with random sampling. These results suggest that infants use goals to make inferences about intentional sampling, under appropriate conditions at 6 months, and they have expectations of the kinds of samples a mechanical device should obtain by 9.5 months.

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Analysis of Variance

Child Development

Concept Formation

Female

Goals

Humans

Infant

Male

Probability

Journal Article Research Support, Non-U.S. Gov't

OpenLB
Open Library of Bioscience