There are 2 types of External Feedback:
External Subjective feedback (Opinion)
· Teacher/Coach can look at the skill and use their expertise to help to improve your performance.
· This gives an independent view of the skill making feedback more valid.
External Objective feedback (Statistics)
· This provides statistics to gauge performance, e.g. a match analysis sheet (most demanding context) and observation schedules.
· A video can be used in conjunction with external feedback to make it more reliable.