Early Age-Related Hearing Loss Investigation (EARHLI)

Inclusion Criteria:

* Age 55-75 years of age
* Adult-onset hearing loss of approximately mild to moderate in severity (4-frequency 0.5, 1, 2, 4 kHz pure tone average 20 dB to 55 dB HL in better hearing ear)
* Aidable hearing loss, defined by word recognition score in quiet ≥ 60% in better hearing ear
* Amnestic mild cognitive impairment (MCI) defined by Mini-Mental State Exam (MMSE2) score \>23, Clinical Dementia Rating (CDR) global score equivalent = 0.5, and ADNI3 criteria of Logical Memory II score of ≤6 if 0-7 years of education, ≤9 if 8-15 years, and ≤11 if ≥16 years
* Availability of a study partner (informant) for the administration of the cognitive screen and the ADCS-Activities of Daily Living-Prevention Instrument (ADCS-ADL-PI)
* Community-dwelling
* Fluent in English or Spanish
* Availability of participant in area for study duration

Exclusion Criteria:

* Self-reported congenital hearing loss, known genetic mutation-related hearing loss, or hearing loss onset before middle age (\<45 years old)
* Prior dementia diagnosis
* Reported disability in ≥ 2 activities of daily living (ADLs)
* Current or previous consistent hearing aid user (such as utilization of hearing aids within the past 6 months beyond brief trials)
* Unwillingness to wear hearing aids regularly (≥8 hours/day)
* Medical contraindications to the use of hearing aids (e.g., actively draining ear)
* Corrected vision impairment (worse than 20/63 on MNRead Acuity Chart in worse eye)
* Untreatable conductive hearing loss with air-bone gap \> 15 dB in two or more contiguous octave frequencies in both ears