Effectiveness of Sound‐Based Interventions for Improving Functional Outcomes in Children: A Systematic Review of the Evidence

<b>Introduction:</b> The aim of this review was to examine the evidence for sound-based interventions in decreasing auditory hypersensitivity and improving behavioural and emotional regulation among children. <b>Methods:</b> A systematic review was conducted of primary research examining the use of sound-based interventions to reduce auditory hypersensitivity and regulate emotion or behaviour. Studies were eligible if they were published in English in a peer-reviewed journal, from January 2010 to March 2023. Studies of any design were included. <b>Results:</b> A total of 4741 titles were identified in the search. Eight papers were eligible, covering six different sound-based interventions. Preliminary evidence highlights improvements in depression and anxiety symptomatology and improved behavioural outcomes including language, listening, and social behaviours. Heterogeneity was high across studies; they varied widely in sample size, population type, study design, and outcomes measured. <b>Conclusions:</b> There is preliminary evidence for the effectiveness of sound-based interventions in improving auditory sensitivity and emotional and behavioural outcomes. However, there is a need for higher quality studies, including randomised controlled trials, and consistency in outcomes across studies to enable a clearer assessment of the evidence.