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Generating a lexicon without a language model: Do words for number count?

Elizabet Spaepen1, Marie Coppola, Molly Flaherty

  • 1University of Chicago, Department of Psychology, 5848 S. University Ave., Chicago IL 60637, liesje@uchicago.edu , mflaherty@uchicago.edu , sgm@uchicago.edu.

Journal of Memory and Language
|November 5, 2013
PubMed
Summary
This summary is machine-generated.

Deaf homesigners

Keywords:
Nicaraguan Sign Languagedigit spangesturehomesignlexical representationnumerical cognitionshort-term memory

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Area of Science:

  • Cognitive Science
  • Linguistics
  • Developmental Psychology

Background:

  • Homesigns are communication systems developed by deaf individuals without formal language input.
  • Understanding the cognitive and linguistic properties of homesign is crucial for understanding language acquisition.

Purpose of the Study:

  • To compare the short-term memory function of homesign gestures for numbers versus other semantic categories.
  • To investigate how number gestures in homesign are processed in working memory.

Main Methods:

  • Memory span tasks were administered to adult homesigners in Nicaragua.
  • Comparison groups included unschooled hearing Spanish speakers and deaf Nicaraguan Sign Language signers.
  • Recall of gestures/words for numbers, objects, actions, and attributes was assessed.

Main Results:

  • Homesign gestures for objects, actions, and attributes functioned similarly to words in short-term memory across all groups.
  • Homesigners exhibited significantly poorer recall for numbers compared to control groups.
  • Recall of numbers in homesigners was negatively impacted by numerical quantity, unlike controls.

Conclusions:

  • Homesign gestures can serve as discrete units in short-term memory for non-numerical concepts.
  • Number gestures in homesign appear to function indexically (item-by-item) rather than as cardinal summaries.
  • The lack of linguistic input impacts the cognitive representation of number in homesign systems.