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Deafness and Hearing Impairments

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Frequency is basically high and low pitch. Communication. Classifications for Hearing Loss ... loss. A 70 dB loss is the cut-off between hard of hearing and ... – PowerPoint PPT presentation

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Title: Deafness and Hearing Impairments


1
Deafness and Hearing Impairments
2
Incidence
  • 28 million people in US
  • Most over 65
  • 1.3 of students in special education
  • Early Detection
  • Attending
  • Earaches / Discharge
  • Makes speech sounds poorly or omits
    age-appropriate sounds completely
  • Misinterpreting verbal requests
  • Direct attempts at communication
  • Facing speaker and attending
  • Repetition
  • Volume on electronic equipment

3
Deafness and Hearing Impairment
  • P.L. 101-476 defines Hearing Impairment
  • P.L. 101-476 defines Deafness
  • Very few students are deaf most are hearing
    impaired

4
Sound Characteristics
  • Two primary characteristics of sound
  • loudness / intensity
  • frequency / pitch
  • Loudness is measured by decibels (dB)
  • Frequency is measured in hertz (Hz) or cycles per
    second
  • Frequency is basically high and low pitch
  • Communication

5
Classifications for Hearing Loss
  • 5 classifications for hearing loss in (dB)
  • Slight 25-40 dB loss
  • Mild 41-55 dB loss
  • Marked 56-69 dB loss
  • Severe 70-90 dB loss
  • Profound 91 dB or greater loss
  • A 70 dB loss is the cut-off between hard of
    hearing and deaf

6
Types of Hearing Loss
  • Conductive -
  • Conductive hearing loss - originates in outer or
    middle ear
  • Sensorineural -
  • Sensorineural hearing losses are more serious,
    occurring in the inner ear

7
Instructional Strategies
  • If using an interpreter
  • Face student when speaking
  • Use videotapes with captioning
  • Allow student to teach some sing language or
    other personal skills to classmates
  • Be sensitive to social cues
  • Have a system in place for identifying cues in
    schools that are only conveyed by sound
  • Wear solid-color clothing
  • New signs for carryover
  • Extraneous noises
  • Lighting
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