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Molecules have characteristic shapes that are crucial for their function. The arrangement of various electron groups around the central atom dictates their molecular geometry. Electron pairs in the valence shell of a central atom will adopt an arrangement that minimizes repulsions between the electron pairs by maximizing the distance between them. The valence electrons form either bonding pairs, located primarily between bonded atoms, or lone pairs.Two regions of electron density in a diatomic...
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Related Experiment Video

Updated: Jul 8, 2026

Creating Objects and Object Categories for Studying Perception and Perceptual Learning
14:38

Creating Objects and Object Categories for Studying Perception and Perceptual Learning

Published on: November 2, 2012

Shape and the first hundred nouns.

Lisa Gershkoff-Stowe1, Linda B Smith

  • 1Department of Speech and Hearing Sciences, Indiana University, Bloomington 47405, USA. gershkof@indiana.edu

Child Development
|July 21, 2004
PubMed
Summary

Children

Area of Science:

  • Child language acquisition
  • Developmental psychology
  • Cognitive development

Background:

  • Early word learning involves complex cognitive processes.
  • Understanding the relationship between attention and vocabulary growth is crucial.
  • Previous research has not fully explored the link between shape attention and noun acquisition rates.

Purpose of the Study:

  • To investigate the correlation between children's attention to shape and their rate of noun acquisition.
  • To examine how early vocabulary composition influences word learning.
  • To explore the developmental trajectory of shape attention during language acquisition.

Main Methods:

  • Longitudinal study tracking 8 children from 17 months of age.
  • Laboratory-based artificial noun learning tasks administered at 3-week intervals.

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  • Parental reports on early vocabulary and word types were collected.

    • Main Results:

    • A positive correlation was observed between attention to shape in a laboratory task and the rate of noun acquisition.
    • Children demonstrated an accelerated increase in noun production following periods of focused shape attention.
    • Early vocabulary composition and statistical regularities in learned words were analyzed.

    Conclusions:

    • Attentional shifts towards shape are linked to accelerated noun acquisition in early childhood.
    • This study highlights the role of perceptual learning, specifically shape bias, in vocabulary development.
    • Findings suggest that focusing on object properties like shape supports faster language learning.