The ABCs of Masking: A Foundational Guide for Audiology Students and Clinicians

Clinical masking is a foundational procedure in audiology that ensures accurate auditory threshold measurements by preventing the non-test ear from participating in the test process. This paper comprehensively explores the principles, procedures, and implications of clinical masking within audiology. With a focus on both air and bone conduction testing, the document delves into the necessity of masking, interaural attenuation, central masking, over-masking, and effective masking levels. Furthermore, the text discusses clinical scenarios, masking dilemmas, recent advancements, and educational strategies for enhancing audiologists' competencies. Emphasis is placed on evidence-based practices, incorporating contemporary research findings, and offering recommendations for early carrier audiologist competency. Key words: masking, non-test ear, test ear, interaural attenuation DOI: 10.7176/JMPB/75-07 Publication date: December 31st 2025