Lostness metric

1. How do you measure lostness?
2. What are the two aspects of lostness?

How do you measure lostness?

The best way to measure lostness is in a usability test where participants are asked to complete a task. This way, you know exactly what they are trying to do, what the optimal path to do it is, and how lost they are.

What are the two aspects of lostness?

Based on these two types of tasks, two corresponding versions of the lostness measure were defined: global lostness, which focuses on tasks, and local lostness, which focuses on objectives.