title: The option "none of these" improves multiple-choice test items.
authors.affiliation: Department of Elementary Education, East Texas State University, Dallas.
authors.forename: R K
authors.initials: RK
authors.lastname: Kolstad
authors.forename: R A
authors.initials: RA
authors.lastname: Kolstad
mesh_terms: D004497:Education, Dental / Q000379:methods*; D004521:Educational Measurement / Q000379:methods*; D006801:Humans; D015203:Reproducibility of Results; D013781:Texas