A comparison of natural and non-natural soundscapes on people with severe or profound intellectual and multiple disabilities

Background Previous research indicates that there is a relationship between the auditory environment and the core affects (or mood) of people with severe or profound intellectual disability. We conducted a systematic study to further explore this relationship.Method Thirteen participants with severe or profound intellectual disability and challenging behaviour were presented with 5 different soundscapes (Beach, Forest, Urban, Music, and Silence) in a dedicated room. Direct support professionals made core affect observations before and after each trial.Results A trend was visible in the core affect observations, with a prominent and consistent increase in the frequency of observations of a Relaxed core affect across conditions. However, a greater increase in the frequency of observations of a Relaxed core affect and a greater decrease in the frequency of observations of an Interested core affect were associated with the natural conditions (Forest and Beach) rather than the non-natural conditions (Urban and Music).Conclusion This pilot study could serve an important role in raising awareness and stimulating further research regarding the auditory environments of people with severe or profound intellectual disability.