The Quick Association Check (QuACk): a resource-light, ‘bias robust’ method for exploring the relationship between mental models and behaviour patterns with home heating systems.

Easy-to-apply methods, allowing exploration of users’ mental models and behaviour with devices, are scarce. Existing methods can be resource-intensive, or fail to mitigate bias, threatening output validity. This paper describes the development of the Quick Association Check (QuACk) and highlights the methodological improvements following qualitative iterations. QuACk is a semi-structured interview with paper-based activities and templates, constructed with consideration of bias from the outset, offering a quick, resource light method to explore association between householders’ heating mental models and behaviour patterns. Through qualitative iterations of the method, key revisions identified the need to: (1) strongly emphasise positioning, guidance and structure; (2) re-categorise existing ‘shared models’ in the literature as ‘device generic’, rather than ‘thermostat specific’ during data interpretation and (3) consider an association at the system level, rather than the device level. The potential to apply the findings of QuACk to energy-reducing strategies is discussed, and generalisability considered. [ABSTRACT FROM AUTHOR]