Table 2 Effectiveness evaluation scale.
| Â | Completeness | Accuracy |
|---|---|---|
1.0–0.9 | Independent task completion | No errors or invalid operations |
0.8–0.7 | Use some ineffective operations but complete the task independently | Some errors |
0.6–0.5 | There were some difficulties in carrying out the task | There are more errors or invalid operations |
0.4–0.3 | This task can only be completed with the help of a document or prompt provided by the facilitator | There are more errors or invalid operations |
0.2–0.1 | Users can barely complete tasks | Users almost give up on tasks |
