Visual Reinforcement Audiometry: A Practical Clinical Guide

Visual Reinforcement Audiometry (VRA) is a conditioned behavioral hearing test used most often with infants and toddlers at a developmental age of about 6 to 24 months, with some guidance extending its use to around 30 months. The child learns that a sound predicts a visual reward, turns toward that reward when the sound arrives, and in doing so gives the audiologist behavioral hearing information inside a short attention window (BSA, 2025; ASHA Practice Portal).

This guide is the hub page of our VRA education library. It summarizes what current published guidance says about ages, conditioning, minimum response levels, common difficulties, equipment, and the wider test battery. It is an evidence summary for working clinicians, not a training credential and not a substitute for your local protocol.

What is visual reinforcement audiometry?

VRA pairs an auditory stimulus with a conditioned head turn and a visual reward. The audiometer and transducer deliver a calibrated sound, the child turns toward the reward location, and a lighted animated toy, a short video clip, or flashing lights reinforces the turn so the response can be repeated at progressively softer levels.

It helps to keep two pieces of the setup mentally separate. The audiometer and its transducers, whether sound-field speakers, insert earphones, or a bone conductor, generate and calibrate the test signal. The visual reinforcement system is a separate piece of equipment whose only job is to reward the head turn quickly and consistently. The 2025 British Society of Audiology (BSA) recommended procedure accepts several reinforcer formats, including illuminated mechanical toys in smoked cabinets, video rewards, and rotating or simple lights (BSA, 2025); the ASHA Practice Portal likewise lists flashing lights, moving toys, and video clips (ASHA).

A quick glossary for readers newer to the method:

Term	What it means
VRA	Visual Reinforcement Audiometry, a conditioned head-turn test for infants and toddlers
MRL	Minimum response level, the lowest level at which reliable, repeatable responses are obtained
CPA	Conditioned play audiometry, the play-based method that typically follows VRA at a developmental age of about 2 to 4 years
Reinforcer	The visual reward (animated toy, video, or lights) that maintains the head-turn response
Sound field	Testing through calibrated speakers in the room; results reflect the better-hearing ear and are not ear-specific
Centering unit	A device that draws the child’s attention back to a neutral midline position between trials

What developmental age is VRA used for?

Professional guidance places VRA at a developmental age of roughly 6 to 24 months, and the 2025 BSA recommended procedure extends the range from a minimum of 6 to 7 months up to around 30 months. Developmental ability, not the date on the birth certificate, determines whether a child can perform the conditioned head turn.

The published ranges overlap rather than agree exactly. The ASHA Practice Portal describes VRA as a method of choice for infants and toddlers at a developmental age of approximately 6 through 24 months (ASHA). The American Academy of Audiology’s 2020 clinical guidance document gives approximately 5 to 24 months developmental age (AAA, 2020). The BSA procedure asks for a child who can sit with minimal support and turn the head, from about 6 to 7 months to around 30 months developmental age (BSA, 2025).

The common thread is that the protocol is chosen for the individual child. A premature infant, or a child with motor or developmental differences, may be ready later than chronological age suggests; the AAA guidance is explicit that the protocol is individualized on developmental and chronological grounds together. For a deeper discussion, see our post on the VRA age range.

How is a child conditioned for VRA?

Conditioning teaches the child that sound predicts the reward. The tester pairs the stimulus and the reinforcer until the child turns reliably to sound alone, confirms conditioning with at least two consecutive unprompted responses, and only then begins testing at descending levels, as the 2025 BSA recommended procedure describes.

At a high level, a session in the two-tester model flows like this (BSA, 2025):

1. Familiarization. The second tester settles the child at midline with quiet tabletop toys, avoiding rhythmic cues, while the controlling tester watches from the observation position.
2. Conditioning trials. The stimulus and the visual reward are presented together, or with a 1 to 2 second delay, so the child links sound to reward.
3. Confirmation. Conditioning is treated as secure only after the child responds to sound alone, with a minimum of two consecutive conditioned responses before testing begins.
4. Testing. Sound alone is presented for approximately 2 to 3 seconds, and a correct head turn earns the visual reward while levels descend toward the child’s minimum response level.
5. Observation and control. The controlling tester watches for checking behavior, inserts no-sound intervals to catch false responses, and both testers communicate about the child’s engagement throughout.

That is a summary of one published procedure, not a training substitute. Local protocols differ on stimulus selection and starting levels, and the skill itself is learned hands-on with an experienced pediatric tester.

What are minimum response levels?

A minimum response level (MRL) is the lowest level at which a child gives reliable, repeatable responses during VRA. MRLs sit close to true thresholds in well-conditioned infants, but they are not automatically equal to adult normative thresholds, so results are interpreted with correction factors where available and corroborated with cross-check measures.

The BSA procedure defines the MRL as the lowest intensity at which reliable, repeatable responses are obtained, and notes that both sensory and non-sensory factors, such as ear canal size and child-generated noise, influence it. It publishes correction factors for insert earphones, subtracting 15 dB at 500 and 1000 Hz and 5 dB at 2000 and 4000 Hz to estimate thresholds, and it notes that frequency-specific corrections exist only for insert earphones (BSA, 2025). ASHA reports that responses are typically obtained down to about 20 dB HL in typically hearing infants (ASHA).

Norrix makes the clinical point plainly: when operant conditioning is not clearly secure, the audiologist cannot assume an MRL reflects true hearing, and cross-check measures become critical in judging the likelihood of hearing loss (Norrix, 2015). One caution bears repeating: sound-field results reflect the better-hearing ear and should never be reported as ear-specific. We unpack this in MRLs versus thresholds.

What makes VRA hard in practice?

The recurring difficulties in VRA are securing conditioning, separating true responses from checking behavior, habituation to the reward, fatigue, developmental mismatch, and a short attention window. A 2025 scoping review that drew on 59 original articles found that reinforcer variety, short reward durations, and planned breaks measurably extend responding.

Visram and colleagues reported that VRA works for most infants at a developmental age of around 7 to 24 months, with more responses typically obtained from younger infants around 12 months than from 18 to 24 month olds (Visram et al., 2025). Their synthesis points to practical levers a clinic controls. Increased variety and complexity of visual reinforcers increased response counts. Short reward durations outperformed long ones; the BSA procedure cites evidence that 4 second rewards produce faster habituation than 0.5 to 1.5 second rewards, and that a 10 minute break significantly increases the responses obtainable after initial habituation (BSA, 2025). Rewarding as few as about half of correct responses did not reduce responding, which buys extra scoreable trials (Visram et al., 2025).

Timing discipline matters as much as hardware. The BSA procedure cautions against presenting a stimulus while the child is engrossed in a newly revealed distraction toy. For session-level tactics, see VRA troubleshooting, and for the evidence comparing reinforcer formats, see the toy versus video research.

What equipment and room setup does VRA involve?

A VRA room combines an audiometer and transducers, sound-field speakers, visual reinforcers in toy, video, or light formats, and a way to observe the child and control the rewards. The 2025 BSA recommended procedure describes a two-tester model with the controlling tester positioned out of the child’s view.

In the BSA’s preferred arrangement, the first tester controls stimuli and rewards from an observation room with a clear view of the child’s face, while the second tester keeps the child engaged at midline in the test room. The procedure suggests a test room of at least 6 m by 4 m plus a control room, speakers at head height at least 1 m from the child’s ear, and a one-way window or monitor for discreet observation and communication between testers (BSA, 2025). For air-conduction testing it prefers insert earphones, which reduce acoustic crossover, are less prone to collapsing ear canals, and carry published correction factors. Toy, video, and light reinforcers are all accepted formats in current guidance (BSA, 2025; ASHA).

On the equipment side, and separately from the clinical evidence above, Pehratek has made VRA reinforcement systems since 1979. The 3D Toy VRA (XM-5000 Series 5) offers 10 sounds, 3 movements, and 5 colored LED patterns, which supports the variety-and-complexity finding above, and the HD Video VRA (VDS-3000 Series 3) uses a 15.6 inch screen. Both install plug and play, with no computer, no software, and no calibration required, and centering units reorient the child’s attention back to a neutral midline starting position between trials.

How does VRA fit the full pediatric test battery?

VRA is one leg of a test battery. The American Academy of Audiology’s cross-check principle calls for behavioral results to be corroborated by physiologic measures such as tympanometry and otoacoustic emissions and, where needed, electrophysiologic measures such as the auditory brainstem response, before conclusions are drawn about a child’s hearing.

The AAA guidance states that behavioral and physiologic assessments, and in some cases electrophysiologic assessments, should be incorporated into a complete evaluation so that results confirm one another across procedures (AAA, 2020). In practice that means a VRA session sits alongside immittance and otoacoustic emissions on the same visit where possible, with auditory brainstem response (ABR) testing used for threshold estimation in infants under about 6 months or when behavioral results cannot be obtained.

When a child cannot complete behavioral testing at all, ASHA notes that sedation may be necessary for physiologic assessment (ASHA); those are medical decisions made with the child’s physician under institutional guidance. As the child develops, VRA gives way to conditioned play audiometry at a developmental age of about 2 to 4 years, and eventually to conventional audiometry.

Frequently asked questions

What age is VRA used for?

Published ranges overlap. ASHA describes a developmental age of approximately 6 through 24 months, the American Academy of Audiology gives approximately 5 to 24 months, and the 2025 BSA recommended procedure extends from 6 to 7 months up to around 30 months. Developmental ability to sit and turn the head matters more than chronological age.

Does VRA measure true hearing thresholds?

VRA produces minimum response levels, the lowest levels at which reliable, repeatable responses are obtained. These sit close to true thresholds in well-conditioned infants but are not automatically equal to adult normative values, so audiologists apply published correction factors where available and corroborate results with cross-check measures such as tympanometry, otoacoustic emissions, and ABR.

Can VRA be completed with insert earphones?

Yes. Many protocols begin in the sound field and move to insert earphones once the child tolerates them. The 2025 BSA recommended procedure prefers insert earphones for air conduction because they reduce acoustic crossover, are less likely to collapse ear canals, and carry published correction factors. Sound-field results are not ear-specific.

What comes after VRA?

When a child can follow simple play instructions, usually at a developmental age of about 2 to 4 years, testing moves to conditioned play audiometry. Behavioral results are combined with physiologic and electrophysiologic measures throughout, and when behavioral testing is not possible, ABR under natural sleep or sedation may be considered under medical guidance.

How long should the visual reward last?

Short. Evidence summarized in the 2025 BSA recommended procedure found that reward durations of about 0.5 to 1.5 seconds sustained responding better than 4 second rewards, which led to faster habituation. Short rewards also keep the session moving inside the child’s limited attention window.

Do I need two testers for VRA?

The 2025 BSA recommended procedure describes a two-tester model as the preferred arrangement, with one tester controlling stimuli and rewards from an observation position while a second keeps the child engaged at midline. Some clinics run single-tester sessions, but that increases the demands on observation and bias control.

Ready to go deeper, or outfitting a room? Explore the rest of the Pehratek education library, then compare toy and video reinforcement systems when you are ready, or write to info@pehratek.com with your room dimensions and test setup. School districts and other public-sector buyers can purchase through BuyBoard Contract 804-26.

This article is educational content for hearing-care and procurement professionals. It is not medical advice. Product availability and specifications can change; confirm current details at pehratek.com.

References

• British Society of Audiology. Recommended Procedure: Visual Reinforcement Audiometry. Version 1.2, June 2025. https://www.thebsa.org.uk/wp-content/uploads/2026/02/OD104-37-BSA-RP-Visual-Reinforcement-Audiometry-v1.2-June-2025-.pdf
• Visram AS, Jackson IR, Almufarrij I, Stone MA, Munro KJ. Optimisation of visual reinforcement audiometry: a scoping review. International Journal of Audiology. 2025;64(8):773-783. https://doi.org/10.1080/14992027.2024.2397716
• American Academy of Audiology. Clinical Guidance Document: Assessment of Hearing in Infants and Young Children. 2020. https://www.audiology.org/wp-content/uploads/2021/05/Clin-Guid-Doc_Assess_Hear_Infants_Children_1.23.20.pdf
• American Speech-Language-Hearing Association. Hearing Loss in Children, Practice Portal. https://www.asha.org/practice-portal/clinical-topics/hearing-loss-in-children/
• Norrix LW. Hearing thresholds, minimum response levels, and cross-check measures in pediatric audiology. American Journal of Audiology. 2015;24:137-144. https://doi.org/10.1044/2015_AJA-14-0095