Feasibility and clinical utility of using the tone matching test for assessment of early auditory processing in schizophrenia.

Early auditory processing (EAP) deficits are prevalent in schizophrenia and linked to disturbances in higher order cognition and daily functioning. Treatments that target EAP have the potential to drive downstream cognitive and functional improvements, but clinically feasible means to detect EAP impairment are lacking. This report describes the clinical feasibility and utility of using the Tone Matching (TM) Test to assess EAP in adults with schizophrenia. Clinicians were trained to administer the TM Test as part of a baseline cognitive battery to inform choice of cognitive remediation (CR) exercises. Only if the TM Test indicated EAP impairment, were the recommended CR exercises to include EAP training. Results indicated clinicians included the TM Test in all baseline assessments and identified 51.72% as EAP impaired. There were significant positive relationships between TM Test performance and cognitive summary scores, confirming instrumental validity. All clinicians found the TM Test useful for CR treatment planning. CR participants with impaired EAP spent significantly more training time on EAP exercises compared to CR participants with intact EAP (20.11% vs 3.32%). This study found that it is feasible to use the TM Test in community clinics and the test was perceived as clinically useful for personalizing treatment.