As a Team, we believe that 
doing

• Discuss Refinement Process
• Design the process and define the outcome
• Practice it

will improve our Refinement process.

• Effectiveness (how many items will be improved per working session) by
  • Being more proficient in the process we will get more SP faster to the INVEST form
• Efficiency (how much it costs us to refine a unit of work) will be improved because
  • Team Health balance per refined item

We will measure the impact of the story by

• Team satisfaction (for Team Health) after the refinement.
• Backlog metric (for refinement effectiveness)  - story points refined.

From Retrospective