Chapter 2 36 Figure 2 | Behaviour chain analysis model by Linehan [19]. Contextual inquiry This study focused on the contextual inquiry and early design phases. First, the contextual inquiry phase was carried out. To become familiar with what kind of support emotional eaters really need, it is important to understand the target group [45]. Even though interventions can be evaluated as positive in terms of effectiveness, if the target group is not captivated by its design and functionalities, they are not going to use it. The use of user profiles and Personas as a tool to inform design is still rare in social sciences. We used the LeRouge classification model [45] and Van Velsen’s additions to it [46] as a guideline to develop two Personas to guide the design of a virtual mHealth coaching intervention. Personas contain information on their technology skills and smartphone use, demographic facts, and healthcare specifics such as current practices in managing one’s own healthcare, support network, and information seeking attitude. In addition to the standard Persona classification model [41], Persona Lisanne is enriched by emotions and feelings in second iteration of contextual inquiry. To gather input for user profiles and Personas, questionnaires (N=321) were circulated via social media and the network of contacts. The target group was “young adults, 1844 years of age” who are self-declared emotional eaters. Examples of questionnaire questions: “For what purposes do you use your smartphone? (social media, news gathering, mail, gaming)”, “At what specific moment in time would you like to/are you in need of contact with a help system?”, “What kind of support do you expect from a smartphone application?” We approached healthcare practitioners for expert interviews (N=13). In the next sections, we present the results of this design case study, including Personas, the use case scenario, and a description of the architecture and design of the ‘Denk je zèlf!’ virtual coach.
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