Notes on Deaf Culture, Language Acquisition, and CMU ASL Program (Jason Barton)

Speaker Background and Context

  • Jason Barton, part-time ASL faculty at CMU since 2016, has over 3535 years in the deaf community.
  • Personal motivation: his adopted daughter, Lizzie, is profoundly deaf (115 dB115\,\text{dB} hearing loss). Her early years highlighted language deprivation risks, which were overcome with intervention.
  • CMU ASL program: Emphasizes experiential service, study abroad (Bahamas, France), and community engagement, promoting tangible good and framing Deaf culture as a community.
  • Introduces ASL 100 (Introduction to Deaf Community and Culture), a voice-on class.

Core Concepts: Deaf Culture vs Disability

  • Key Framing: Deaf culture is a culture, not solely a disability; language is central.
  • Terminology: Distinction between Big D Deaf (culturally Deaf, uses sign language) and little d deaf (hearing loss condition).
  • Preferred Terminology: "Deaf" (as identity), "sign language user"; avoid "hearing impaired" (generally), "deaf and dumb," "deaf mute." "Deaf gain" is also a concept.
  • Central Criterion for Deaf Culture: Use of sign language is key, not the degree of hearing loss.
  • Language Deprivation: Lack of early language access for deaf children, impacting cognitive/social development.
  • Language Acquisition Window: Critical period for first language acquisition closes around 77 years old (most important: 2 to 72\text{ to }7 years).
  • Brain and Language Modality: Brain processes visual and verbal languages similarly; sign language offers full linguistic development if speech access is limited.

Language Deprivation: Prevalence, Causes, and Consequences

  • Prevalence: Approximately 70%70\% of deaf children experience some language deprivation.
  • Hearing Loss Statistics:
    • US: 3.75×1073.75\times 10^7 adults with significant hearing loss; 4.8×1074.8\times 10^7 with disabling loss.
    • Worldwide: 4.66×1084.66\times 10^8 people with hearing loss, projected to exceed 6.0×1086.0\times 10^8 by 2030.
  • Parental Language Input: About 90%90\% of deaf children have hearing parents, creating early language access challenges.
  • Impact: Language deprivation constrains literacy, communication, and educational/occupational opportunities.

Myths About Deafness and Deaf Culture (Quick Bust-Cast)

  • Myth: Deaf equals inability to hear.
    • Reality: Deafness is a spectrum, culture, and community.
  • Myth: "Broken" ears; sign language is a "crutch."
    • Reality: Deafness can be an asset; "deaf gain" (enhanced visual-spatial processing).
  • Myth: All deaf people use sign language.
    • Reality: >20%20\% use sign language; others use speech, lip-reading, etc.
  • Myth: Cochlear implants cure deafness.
    • Reality: Aid speech perception for some; not a universal cure.
  • Myth: Lip-reading alone suffices.
    • Reality: Success is limited (20%−20\%-25%25\% for best).
  • Myth: Sign language prevents integration.
    • Reality: Improves inclusion and learning.
  • Myth: Deaf children with hearing parents can't develop language effectively.
    • Reality: With access (sign language/speech therapy), many develop normally.
  • Myth: Interpreters are optional if a child "seems" to understand.
    • Reality: Substantial information is missed without interpreters.

Demographics, Access, and Policy Context

  • Advocacy: LEAD-K (Language Equality and Acquisition for Deaf Kids) championed by Nile DiMarco promotes language equality and early access.
  • Practical Implications: Early intervention, consistent language access (combined modalities often supported by research) are critical.

Education, Careers, and Campus Opportunities at CMU

  • Courses: ASL 100 (Intro to Deaf Community/Culture), ASL 305 (Professions serving deaf/hard of hearing, online, part of Deaf and Hard of Hearing Studies certificate).
  • Study Abroad: Bahamas (spring break) and France (summer, including international deaf festival in even years) – immersion in sign language.
  • Deaf Awareness Week: Events like hearing loss simulations, AMA with Matt Daniel (deaf tour guide), ASL Rocks (student presentations), and sign-language game nights.

Personal Reflections and Practical Takeaways

  • "Why": Engagement is rooted in personal connections (e.g., Lizzie) and a desire to help.
  • Language Access: A civil and educational right; sign language and interpreters are essential.
  • Practical Application: Awareness of deaf culture fosters inclusive environments.

Takeaways for Exam Prep

  • Distinguish: Big D Deaf culture vs. little d medical condition; sign language is central.
  • Understand: Language acquisition window, language deprivation, importance of early intervention.
  • Debunk: Common myths with evidence-based counterpoints.
  • Know: Key statistics (prevalence, sign language users, deprivation rates).
  • Recognize: LEAD-K and language equality advocacy.
  • Familiarize: CMU ASL program structure and opportunities.
  • Appreciate: Real-world impact of language access.
  • Consider: Ethical aspects: respect for preferences, interpreter access.
  • References: Films (Coda, Switched at Birth, A Quiet Place), Nile DiMarco's advocacy.

Quick Reference: Key Figures, Terms, and Numbers

  • Big D Deaf vs. little d deaf: Culture/language vs. condition.
  • Deaf gain: Enhanced cognitive/perceptual abilities from deafness.
  • Language deprivation risk: 70%70\% of deaf children affected.
  • Prevalence:
    • US: 3.75×1073.75\times 10^7 adults (significant loss), 4.8×1074.8\times 10^7 (disabling loss).
    • Worldwide: 4.66×1084.66\times 10^8 (total loss).
  • Proportions: 90%90\% deaf children to hearing parents; >20%20\% deaf individuals use sign language.
  • Lip-reading success: Approx. 20%−20\%-$$25\%%$.
  • Cochlear implants: Aid speech perception; not a universal cure.
  • Programs: ASL 100, 305; Deaf/Hard of Hearing Studies; study abroad (Bahamas, France); Deaf Awareness Week events.
  • Ethical emphasis: Respect individual language choice; provide diverse access.