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A concise Description of Non-linguistic features (Such as Familial, educational and Health information) and linguistic skills in hard of hearing children will be helpful in compensating for their disabilities. In the current study we studied 75 school-Children with average hearing Thresholds of 55-70dB in better ear. All the subjects aged between 8-16years-old with the average age of 11.04.We studied 27 non-linguistic variables by using questionnaire and 32 grammatical variables by studying evoked speech in the participants. The average utterance length of the subjects was estimated 2.763 words. 29% of the all participants' utterances was accurate and just 16.3% of the verbs were produced accurately.One of the most common errors in sentence and verb level, was the mistaken ably omitting of the structural features, the tense problem of the verb and also the mismatching between subject and verb. We also observed a significant correlation between some non-linguistic features such as grade, previous education in conventional schools and the rate of hearing aid usage and the number of accurate utterances in participants.

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Background and Aim: Diabetes mellitus is a progressive metabolic disease. Studies about the relationship between diabetes mellitus and auditory impairment have shown variable results in supporting the fact that diabetes may have a complex repercussion on the auditory pathways. We aimed to evaluate hearing in patients with type II diabetes mellitus with behavioral and electrophysiological auditory tests.

Methods: In a cross-sectional study, we assessed 30 patients with type II diabetes mellitus with the mean age of 43.7 (SD: 1.3) years, ranging 40-45 years, and 30 matched healthy subjects with the mean age of 41.5 (SD: 1.5) years. Subjects were evaluated using auditory brainstem response (ABR) and pure tone audiometry. The results were compared between two groups.

Results: Pure tone audiometry was normal. There was a significant increased latency for waves I, III, and V, and also, interpeak latencies of I-III, III-V, and I-V waves (p<0.05).

Conclusion: ABR latency prolongation indicates abnormal nerve conduction velocity in patients with type II diabetes mellitus. ABR can be an important clinical tool for evaluating diabetes influence on cochlear nerve conduction velocity before hearing loss occurs in these patients.