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Language is a unique communication system that uses words and systematic rules to organize and transmit information. Unlike other forms of communication, which may involve postures, movements, odors, or vocalizations, language relies on symbols and grammar. This makes human communication distinct from that of other species, who also communicate but do not use language in the same way humans do.
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Language, whether spoken, signed, or written, consists of specific components: lexicon and grammar. The lexicon is the vocabulary of a language, comprising its words. Grammar is the set of rules used to convey meaning through the lexicon. For example, English grammar adds “-ed” to most verbs to indicate past tense. Words are formed by combining phonemes, which are the basic sound units of a language. Different languages have different sets of phonemes (e.g., “ah” vs.
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Using Eye Movements Recorded in the Visual World Paradigm to Explore the Online Processing of Spoken Language
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Using language input and lexical processing to predict vocabulary size.

Tristan Mahr1, Jan Edwards2

  • 1Department of Communication Sciences and Disorders, University of Wisconsin-Madison, Madison, WI, USA.

Developmental Science
|May 22, 2018
PubMed
Summary
This summary is machine-generated.

Early language input and lexical processing in toddlers predict later vocabulary growth. While input is key, processing efficiency didn't alter input's impact on vocabulary size.

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Area of Science:

  • Child development
  • Linguistics
  • Cognitive science

Background:

  • Children acquire language through caregiver interactions.
  • Early language input quantity and quality are crucial for language development.
  • Word recognition efficiency might mediate the link between language input and vocabulary growth.

Purpose of the Study:

  • To investigate if early language input and lexical processing predict vocabulary size in preschoolers.
  • To determine the role of word recognition efficiency in the relationship between input and vocabulary development.

Main Methods:

  • Longitudinal study of 109 preschoolers aged 28-39 months.
  • Language input measured via adult word counts using LENA recordings.
  • Lexical processing assessed using the visual world paradigm, measuring look proportions to targets.

Main Results:

  • Language input significantly predicted vocabulary size one year later.
  • Lexical processing efficiency did not moderate the effect of input on vocabulary growth.
  • Both input and processing were stronger predictors of receptive vocabulary than expressive vocabulary.

Conclusions:

  • Early language input is a primary driver of vocabulary development.
  • Lexical processing efficiency does not appear to limit the benefits of language input for vocabulary growth.
  • Language input and processing are more critical for understanding words (receptive) than producing them (expressive).