title: Defining handedness: a critical variable.
authors.affiliation: Hand Research, Zionsville, IN 46077.
authors.forename: E E
authors.initials: EE
authors.lastname: Fess
mesh_terms: D007839:Functional Laterality / Q000145:classification*; D006801:Humans; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires / Q000592:standards; D006113:United Kingdom; D014481:United States