Exploration of High Frequency Otoacoustic Emissions and Developmental Language Disorders

Inclusion criteria

for case (children with language disorder):

• Normal hearing (after an audiometry test, even if an ENT consultation has been carried out beforehand and if the doctor has not found any hearing problem, as defined in the NF EN ISO 70292017-04 standard, and according to an average hearing loss calculated according to the BIAP <20dB HL)
• Free and informed consent of the parental authority and the patient
• Affiliated to the social security system
• Presenting a developmental language acquisition disorder (score according to the EVALO / EVALEO test)
• For children between 15 and 17 years of age, completion of the EVALEO test before their 16th birthday

Inclusion criteria

for control (children without language disorder) :

• Normal hearing (after an audiometry test, even if an ENT consultation has been performed beforehand and if the doctor has not found any hearing problem, as defined in the NF EN ISO 70292017-04 standard, and according to an average hearing loss calculated according to the BIAP <20dB HL)
• Free and informed consent of the parental authority and the patient
• Enrolled in the social security system

Exclusion criteria

• Hearing disorder identified during the inclusion visit (presence of cerumen or foreign body in the earwax plug or foreign body in the external auditory canal, tympanometry suggesting a middle ear disorder, audiometry with thresholds outside the normal thresholds outside the normal range (0-20dB HL), absence of responses in (0-20dB HL), absence of responses in acoustic otoemissions or acoustic distortion products) on conversational frequencies between 500Hz and 4kHz.
• Declaration by the parents of an ENT follow-up for a hearing disorder and/or a speech therapy for a language disorder
• Refusal of participation evoked by the subject