Newbold, Joseph William; (2019) Musical expectancy within movement sonification to overcome low self-efficacy. Doctoral thesis (Ph.D), UCL (University College London).

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Abstract

While engaging in physical activity is important for a healthy lifestyle, low self-efficacy, i.e. one's belief in one's own ability, can prevent engagement. Sound has been used in a variety of ways for physical activity: movement sonification to inform about movement, music to encourage and direct movement, and auditory illusions to adapt people's bodily representation and movement behaviour. However, no approach provides the whole picture when considering low self-efficacy. For example, sonification does not encourage movement past a person's expectation of their ability, music gives no information of one's capabilities, and auditory illusions do not direct changes in movement behaviour in a directed way. This thesis proposes a combined method that leverages the agency felt over sonification, our embodiment of music and movement altering feedback to design \textit{``musical expectancy sonifications''} which incorporate musical expectancy within sonification to alter movement perception and behaviour. This thesis proposes a Movement Sonification Expectation Model (MoSEM), which explores expectation within a movement sonification impact on people's perception of their abilities and the way they move. This MoSEM is then interrogated and developed in four initial control studies that investigate these sonifications for different types of movement as well as how they interact with one's expectation of a given movement. These findings led to an exploration of how the MoSEM can be applied to design sonification to support low-self efficacy in two case study populations: chronic pain rehabilitation, including one control study and one mixed methods study, and general well-being, including one interview study and two control studies. These studies show the impact of musical expectation on people's movement perception and behaviour. The findings from this thesis demonstrate not only how sonifications can be designed to use musical expectancy, but also shows a number of considerations that are needed when designing movement sonifications.

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