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Adults' perception of children's height and reaching capability
Rita Cordovil1, João Barreiros
1Faculty of Human Kinetics, Technical University of Lisbon, Estrada da Costa, 1495-688 Cruz Quebrada, Portugal. ritacordovil@fmh.utl.pt
Acta Psychologica
|May 18, 2010
Summary
Adults made greater estimation errors judging younger children's reachability and height. This suggests adults may perceive children using adult body proportions, impacting affordance judgments.
Area of Science:
- Cognitive Psychology
- Developmental Psychology
- Human Factors
Background:
- Accurate perception of children's capabilities is crucial for safety and interaction.
- Adults' judgments of children's affordances can be influenced by various factors, including observer characteristics and task specifics.
Purpose of the Study:
- To investigate how task, model, and observer characteristics affect adults' estimation errors when judging children's affordances.
- To analyze adults' accuracy in estimating children's height and vertical reaching capability.
Main Methods:
- 118 adults estimated the height and reachability of three girls (ages 3.55, 4.74, 7.06 years).
- Estimations were made with and without the child model present.
- Constant errors (CE) and absolute percent errors (APE) were calculated.
Main Results:
- Estimation errors (APE) were significantly higher for the youngest model and when the model was absent.
- Adults generally underestimated children's height but overestimated their reachability.
- Overestimation of reachability was more pronounced for the younger child.
Conclusions:
- Adults exhibit biases when judging children's affordances, particularly concerning younger children's reachability.
- These biases may stem from adults applying adult body proportion schemas to children.
- Understanding these perceptual biases is important for child development research and safety considerations.
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