Table 2.

The expert participants’ familiarity with relevant topics ¹.

Participants	Designing for Behavioural Change					Behavioural Addiction					Human-Computer Interaction					Social Informatics					User Involvement
	1	2	3	4	5	1	2	3	4	5	1	2	3	4	5	1	2	3	4	5	1	2	3	4	5
P1				●					●						●					●					●
P2					●					●					●					●					●
P3				●				●						●					●					●
P4			●						●					●				●						●
P5					●					●			●						●					●

¹ The questionnaire was based on 5-points Likert scale which can be interpreted as follows: (1) Very Poor (2) Poor (3) Fair (4) Good (5) Very Good.