“…These methods of analysis made it possible to estimate transferability to other student craft teacher populations, along with the internal reliability and validity of the interpretation of data and results (Welkowitz et al , 2012; Rowe, 2016). The codes and categories that emerged from the data were read carefully without any theoretical framework, although the data were simultaneously analysed in relation to data previously reported elsewhere (Väänänen et al , 2017). However, the present study takes the analysis further; following statistical description and analysis, the results were compared to existing theories and perspectives on SD, sustainable product design and craft practice to ground the emerging theory (Dey, 2007; Cresswell, 2007; Morse, 2007; Cho and Lee, 2014).…”