title: The assessment tool is only as good as the assessors.
authors.forename: Gavin D
authors.initials: GD
authors.lastname: Perkins
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Tweed
mesh_terms: D004521:Educational Measurement; D006801:Humans; D015588:Observer Variation; D014743:Videotape Recording / Q000379:methods*