CAOHC CERTIFICATION |ACTUAL EXAM QUESTIONS AND WELL DE-
TAILED VERIFIED SOLUTIONS| GRADED A+| BRAND NEW 2026/2027
UPDATE
What does CAOHC stand for? - ANSWER Council for Accreditation in Occupational Hear-
ing Conservation
Who is the certification body for? - ANSWER Occupational Hearing Conservationist
(OHCs)
Course Directors (CDs)
Professional Supervisors (PSs)
What is CAOHCs mission? - ANSWER To promote hearing loss prevention by enhancing
the quality of occupational hearing loss prevention practices, with a focus on:
Providing OHCs: resources and guidance to facilitate the practice of hearing loss prevention
through standardized training and credentialing
Providing CDs: training resources, curriculum oversight, and professional support to assist in
ensuring the competence of OHC's
What does CAOHC do? - ANSWER Promote BEST PRACTICES in occupational hearing con-
servation
What is a CAOHC certified student? - ANSWER Certified occupational hearing conserva-
tionist (COHC)
1
,How long does a COHC certification last? - ANSWER 5 years
What are the two effects of noise? - ANSWER Auditory
Non-auditory
Defined auditory - ANSWER Direct effects to the ear
What are some examples of auditory effects? - ANSWER 1. Noise induced hearing loss
(NIHL)
2. Tinnitus (ringing in the ear)
3. Hyperacusis (high sensitivity to noise; lower tolerance for loud sounds)
4. Communication interference
Define non-auditory - ANSWER Other physiological and psychological effects
What are some examples of non-auditory effects? - ANSWER 1. Hypertension
2. Cognitive decline
3. Stress
4. Isolation, Social withdrawal, frustration
2
, 5. Sleep disturbances
6. Degraded work performance
What are some early signs of noise induced hearing loss? - ANSWER 1. Difficulty under-
standing conversations (particularly in background noise)
2. Ringing or buzzing in the ears (tinnitus)
What are some characteristics of noise induced hearing loss? - ANSWER 1. Usually bilat-
eral, always sensorineural
2. Typically affects high frequencies first; audiometric "notch" at 4000Hz
3. Primary determiners of damage are duration and intensity of sound
4. Temporary hearing threshold shifts (TTS) become permanent threshold shifts (PTS)
Name two sources of hazardous noise - ANSWER 1. Occupational noise exposure
2. Non-occupational noise exposure
What is the most common occupational illness and second most self reported occupational
illness for American workers? - ANSWER Noise induced hearing loss (NIHL)
What occupation has the highest percentage of noise induced hearing loss? - ANSWER
Manufacturing
3
TAILED VERIFIED SOLUTIONS| GRADED A+| BRAND NEW 2026/2027
UPDATE
What does CAOHC stand for? - ANSWER Council for Accreditation in Occupational Hear-
ing Conservation
Who is the certification body for? - ANSWER Occupational Hearing Conservationist
(OHCs)
Course Directors (CDs)
Professional Supervisors (PSs)
What is CAOHCs mission? - ANSWER To promote hearing loss prevention by enhancing
the quality of occupational hearing loss prevention practices, with a focus on:
Providing OHCs: resources and guidance to facilitate the practice of hearing loss prevention
through standardized training and credentialing
Providing CDs: training resources, curriculum oversight, and professional support to assist in
ensuring the competence of OHC's
What does CAOHC do? - ANSWER Promote BEST PRACTICES in occupational hearing con-
servation
What is a CAOHC certified student? - ANSWER Certified occupational hearing conserva-
tionist (COHC)
1
,How long does a COHC certification last? - ANSWER 5 years
What are the two effects of noise? - ANSWER Auditory
Non-auditory
Defined auditory - ANSWER Direct effects to the ear
What are some examples of auditory effects? - ANSWER 1. Noise induced hearing loss
(NIHL)
2. Tinnitus (ringing in the ear)
3. Hyperacusis (high sensitivity to noise; lower tolerance for loud sounds)
4. Communication interference
Define non-auditory - ANSWER Other physiological and psychological effects
What are some examples of non-auditory effects? - ANSWER 1. Hypertension
2. Cognitive decline
3. Stress
4. Isolation, Social withdrawal, frustration
2
, 5. Sleep disturbances
6. Degraded work performance
What are some early signs of noise induced hearing loss? - ANSWER 1. Difficulty under-
standing conversations (particularly in background noise)
2. Ringing or buzzing in the ears (tinnitus)
What are some characteristics of noise induced hearing loss? - ANSWER 1. Usually bilat-
eral, always sensorineural
2. Typically affects high frequencies first; audiometric "notch" at 4000Hz
3. Primary determiners of damage are duration and intensity of sound
4. Temporary hearing threshold shifts (TTS) become permanent threshold shifts (PTS)
Name two sources of hazardous noise - ANSWER 1. Occupational noise exposure
2. Non-occupational noise exposure
What is the most common occupational illness and second most self reported occupational
illness for American workers? - ANSWER Noise induced hearing loss (NIHL)
What occupation has the highest percentage of noise induced hearing loss? - ANSWER
Manufacturing
3
