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Can sign language make you better at hand processing?

Francesca Peressotti1, Michele Scaltritti2, Michele Miozzo3

  • 1Dipartimento di Psicologia dello Sviluppo e della Socializzazione, Università di Padova, Padova, Italy.

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Summary
This summary is machine-generated.

Sign language acquisition enhances cognitive processing of arbitrary hand-based associations. Deaf signers show improved memory for hand-related stimulus-response pairs, impacting cognitive flexibility.

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Area of Science:

  • Cognitive psychology
  • Linguistics
  • Neuroscience

Background:

  • Natural languages rely on arbitrary form-meaning relationships.
  • Sign languages utilize hand gestures as primary articulators.
  • The cognitive impact of using hands in language is not fully understood.

Purpose of the Study:

  • To investigate how sign language impacts the processing of arbitrary non-linguistic stimulus-response (S-R) associations involving the hand.
  • To determine if signers exhibit different cognitive processing of hand-related S-R tasks compared to non-signers.
  • To explore the relationship between language modality and cognitive function.

Main Methods:

  • Utilized the Simon effect task, which measures cognitive control in stimulus-response association.
  • Compared performance between deaf signers and hearing non-signers (speakers).
  • Analyzed response times and accuracy in tasks involving hand stimuli.

Main Results:

  • Signers and non-signers showed differences in the Simon task specifically when hand stimuli were presented.
  • Signers demonstrated enhanced processing of arbitrary S-R pairs involving the hand.
  • Response-time analyses indicated improved memory trace processing for hand-related associations in signers.

Conclusions:

  • Sign language acquisition influences cognitive processing, particularly for hand-based arbitrary associations.
  • The modality of language (signed vs. spoken) can shape fundamental cognitive mechanisms.
  • Findings highlight the intricate interplay between language, cognition, and sensorimotor experience.