Developmental change in the acuity of approximate number and area representations.

@article{Odic2013DevelopmentalCI,
  title={Developmental change in the acuity of approximate number and area representations.},
  author={Darko Odic and Melissa E. Libertus and Lisa Feigenson and Justin Halberda},
  journal={Developmental psychology},
  year={2013},
  volume={49 6},
  pages={1103-12}
}
From very early in life, humans can approximate the number and surface area of objects in a scene. The ability to discriminate between 2 approximate quantities, whether number or area, critically depends on the ratio between the quantities, with the most difficult ratio that a participant can reliably discriminate known as the Weber fraction. While developmental improvements in the Weber fraction have been demonstrated for number, the developmental trajectory of improvement in area… CONTINUE READING
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