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Teleological reasoning in 4-month-old infants: pupil dilations and contextual constraints.

Gredeb├Ąck G, Melinder A - PLoS ONE (2011)

Bottom Line: Four-month-old infants were presented with feeding actions performed in a rational or irrational manner.Infants reacted to the irrational feeding actions by dilating their pupils, but only in the presence of rich contextual constraints.The study demonstrates that teleological processes are online at 4 months of age and illustrates the usefulness of pupil dilations as a measure of social cognitive processes early in infancy.

View Article: PubMed Central - PubMed

Affiliation: Department of Psychology, Uppsala University, Uppsala, Sweden. gustaf.gredeback@psyk.uu.se

ABSTRACT
Four-month-old infants were presented with feeding actions performed in a rational or irrational manner. Infants reacted to the irrational feeding actions by dilating their pupils, but only in the presence of rich contextual constraints. The study demonstrates that teleological processes are online at 4 months of age and illustrates the usefulness of pupil dilations as a measure of social cognitive processes early in infancy.

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Related in: MedlinePlus

Snapshots of the feeding action; bringing food to the recipients hand/mouth.(A). Snapshots of the recipient leaning forward to eat off the back of her hand (B) in the irrational and constrained condition (upper) and the rational and constrained condition (lower).
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pone-0026487-g001: Snapshots of the feeding action; bringing food to the recipients hand/mouth.(A). Snapshots of the recipient leaning forward to eat off the back of her hand (B) in the irrational and constrained condition (upper) and the rational and constrained condition (lower).

Mentions: Two other conditions feature a constrained context in which a barrier is superimposed onto the irrational and unconstrained condition described above. Accordingly, the same feeding to the back of the hand action is displayed, but this time with a barrier extending from the wall behind the actors. During irrational feeding the barrier is placed outside the actors reaching space (irrational and constrained condition). During rational feeding the barrier is placed in a manner that restricts the feeder's access to the recipient's mouth (rational and constrained condition). Snapshots of the four conditions are presented in Figure 1.


Teleological reasoning in 4-month-old infants: pupil dilations and contextual constraints.

Gredeb├Ąck G, Melinder A - PLoS ONE (2011)

Snapshots of the feeding action; bringing food to the recipients hand/mouth.(A). Snapshots of the recipient leaning forward to eat off the back of her hand (B) in the irrational and constrained condition (upper) and the rational and constrained condition (lower).
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3198477&req=5

pone-0026487-g001: Snapshots of the feeding action; bringing food to the recipients hand/mouth.(A). Snapshots of the recipient leaning forward to eat off the back of her hand (B) in the irrational and constrained condition (upper) and the rational and constrained condition (lower).
Mentions: Two other conditions feature a constrained context in which a barrier is superimposed onto the irrational and unconstrained condition described above. Accordingly, the same feeding to the back of the hand action is displayed, but this time with a barrier extending from the wall behind the actors. During irrational feeding the barrier is placed outside the actors reaching space (irrational and constrained condition). During rational feeding the barrier is placed in a manner that restricts the feeder's access to the recipient's mouth (rational and constrained condition). Snapshots of the four conditions are presented in Figure 1.

Bottom Line: Four-month-old infants were presented with feeding actions performed in a rational or irrational manner.Infants reacted to the irrational feeding actions by dilating their pupils, but only in the presence of rich contextual constraints.The study demonstrates that teleological processes are online at 4 months of age and illustrates the usefulness of pupil dilations as a measure of social cognitive processes early in infancy.

View Article: PubMed Central - PubMed

Affiliation: Department of Psychology, Uppsala University, Uppsala, Sweden. gustaf.gredeback@psyk.uu.se

ABSTRACT
Four-month-old infants were presented with feeding actions performed in a rational or irrational manner. Infants reacted to the irrational feeding actions by dilating their pupils, but only in the presence of rich contextual constraints. The study demonstrates that teleological processes are online at 4 months of age and illustrates the usefulness of pupil dilations as a measure of social cognitive processes early in infancy.

Show MeSH
Related in: MedlinePlus