Novice
Screen to screen interactions are overly complex or require too many steps.
Competent
Screen to screen interactions proceed in a logical flow which has been minimized without impeding functionality.
Proficient
Interactions offer “sane defaults” to reduce friction, and empty states and other edge cases have been considered.
Expert
Multiple interaction patterns and models have been considered and tested, with clear supporting evidence for the model chosen being connected to users' mental models of the product and tasks.