Hearing impairments can hinder children’s communication development, particularly expressive vocabulary acquisition during the golden age of 4–6 years. Limited auditory input restricts vocabulary development. Auditory Verbal Therapy (AVT) emphasizes intensive use of residual hearing through hearing aids. This study aimed to determine the effect of AVT on expressive vocabulary among children with hearing impairments aged 4–6 years at RSUD Dr. Soegiri Lamongan. A quantitative, pre-experimental design with a one-group pretest–posttest approach was employed. Total sampling involved 10 children using hearing aids. Expressive vocabulary was measured using the Expressive One-Word Picture Vocabulary Test (EOWPVT), with raw scores calculated before and after an intervention delivered using an AVT module. The mean expressive vocabulary raw score increased from 27.00 at pretest to 30.10 at posttest. A paired-samples t-test revealed a statistically significant difference (p < 0.001). These findings indicate that AVT significantly improved expressive vocabulary among children with hearing impairments aged 4–6 years at RSUD Dr. Soegiri Lamongan. AVT is therefore a relevant intervention for supporting expressive vocabulary development through consistent auditory stimulation and the intensive use of residual hearing.
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