Hearing Screening and Audiological Referral

Hearing screening and audiological referral is the use of brief, standardised procedures to identify people who may have a hearing loss and to direct them for fuller audiological evaluation. Because hearing supports the development and use of spoken language, screening for hearing problems and knowing when to refer is an integral part of speech-language assessment, even though definitive diagnosis of hearing loss is made by audiologists.

Definition

Hearing screening is the application of a brief, predetermined test with a fixed pass/refer criterion to detect people likely to have a hearing loss, who are then referred for comprehensive audiological assessment and diagnosis.

Scope

This topic covers the purpose and logic of hearing screening, the main physiological and behavioural screening methods (such as otoacoustic emissions and automated auditory brainstem response in infants, and pure-tone screening in older children and adults), the pass/refer decision, and the rationale for audiological referral. It is presented as a reference account of screening and referral principles, not as instructions for screening or diagnosing an individual.

Core questions

• What distinguishes a screen, which sorts people into pass or refer, from a diagnostic audiological evaluation?
• Which screening methods suit which populations, and what do they actually measure?
• How do sensitivity, specificity, and follow-up rates determine whether a screening programme succeeds?
• When should an apparently passing or failing screen prompt audiological referral within speech-language assessment?

Key concepts

• Screening versus diagnostic evaluation
• Pass/refer criterion
• Otoacoustic emissions (OAE)
• Automated auditory brainstem response (AABR)
• Pure-tone screening
• Sensitivity, specificity, and false-positive referral
• Early hearing detection and intervention (EHDI)
• Audiological referral pathway

Mechanisms

A screening test applies a fixed stimulus and a predetermined criterion to classify each person as pass or refer. In newborns, physiological methods are used: otoacoustic emissions detect the cochlea's response to sound, and automated auditory brainstem response measures neural responses; both can be administered without behavioural cooperation (White & Maxon, 1996). In older children and adults, behavioural pure-tone screening presents tones at set frequencies and a fixed level. A refer result does not establish hearing loss; it signals the need for comprehensive audiological assessment that quantifies the type and degree of any loss (Katz et al., 2015). Programme performance depends on the screen's sensitivity and specificity and on whether referred individuals complete follow-up (American Academy of Pediatrics, Joint Committee on Infant Hearing, 2007).

Clinical relevance

Because undetected hearing loss can affect speech and language development and communication, hearing screening and timely audiological referral are woven into speech-language assessment. This entry describes how screening works and why referral matters; it is a reference orientation and does not prescribe screening procedures or diagnose hearing loss in any individual.

Epidemiology

Permanent congenital hearing loss is among the more common conditions detectable at birth, which is the rationale for universal newborn hearing screening programmes; population screening aims to identify affected infants early enough for timely intervention (American Academy of Pediatrics, Joint Committee on Infant Hearing, 2007; White & Maxon, 1996).

Evidence & guidelines

Position statements on early hearing detection and intervention set out principles for universal newborn screening, benchmarks for screening, diagnosis, and intervention timing, and the importance of minimising loss to follow-up after a refer result (American Academy of Pediatrics, Joint Committee on Infant Hearing, 2007). Reviews of otoacoustic-emission screening describe its development and its role, alongside automated auditory brainstem response, in universal programmes (White & Maxon, 1996).

History

Hearing screening evolved from selective, high-risk-register approaches toward universal newborn screening as physiological methods such as otoacoustic emissions and automated auditory brainstem response made objective testing of infants feasible in the 1980s and 1990s (White & Maxon, 1996). Successive position statements consolidated the early hearing detection and intervention framework, setting expectations for screening, diagnosis, and follow-up (American Academy of Pediatrics, Joint Committee on Infant Hearing, 2007).

Debates

How should programmes balance sensitivity against false-positive referrals?

A screen set to miss few cases may refer many infants who hear normally, creating follow-up burden and family anxiety; choosing criteria and protocols that limit false positives while maintaining sensitivity is a continuing programme-design question.

Key figures

• Karl White
• Aaron Thornton

Seminal works

• jcih-2007
• white-1996

Frequently asked questions

Does failing a hearing screen mean a person has hearing loss?

No. A refer result indicates a higher likelihood of hearing loss and the need for a full audiological evaluation; the screen sorts people for further testing rather than diagnosing loss.

Why is hearing screening part of speech-language assessment?

Because hearing underpins the development and use of spoken language, identifying possible hearing loss and referring for audiological evaluation helps ensure that communication difficulties are interpreted correctly.