*5.2. System Usability Scale*

After using the PERGAMON platform, participants from the pre-pilot study group demonstrated a mean SUS index of 44.58 (SD = 21.18; range = 25.00–82.50) which indicates a below average usability score. Almost all participants indicated that they found the PERGAMON platform unnecessarily complex (statement 2) and not easy to use (statement 3). Half of the participants felt that they needed assistance to be able to use the PERGAMON platform (statement 4; Table 1). In the pilot-study, group participants had a mean SUS index of 50.18 (SD = 13.71; range = 35.00–90.00) which indicates a below average usability score. As can be seen in Table 4, although 50% of pilot study participants thought the PERGAMON platform was easy to use after playing it for two weeks (statement 3) and 57% did NOT think (disagreed) they would need assistance when using the system (statement 4); 57% did NOT think (disagreed) that they would like to use the system frequently (statement 1).


**Table 4.** Pre-pilot and pilot study usability (SUS) questionnaire scores (in %).
