title: Behavior states and a half-full glass: a response to Mudford, Hogg, and Roberts.
authors.affiliation: Special Education Centre, The University of Newcastle, New South Wales, Australia. scmda@cc.newcastle.edu.au
authors.forename: M
authors.initials: M
authors.lastname: Arthur
mesh_terms: D006801:Humans; D008607:Intellectual Disability / Q000175:diagnosis / Q000523:psychology*; D015588:Observer Variation; D015203:Reproducibility of Results; D014743:Videotape Recording