title: The reliability of a two-item scale: Pearson, Cronbach, or Spearman-Brown?
authors.affiliation: Radboud University Nijmegen, P.O. Box 9104, 6500 HE, Nijmegen, Netherlands. r.eisinga@maw.ru.nl
authors.forename: Rob
authors.initials: R
authors.lastname: Eisinga
authors.forename: Manfred te
authors.initials: Mt
authors.lastname: Grotenhuis
authors.forename: Ben
authors.initials: B
authors.lastname: Pelzer
mesh_terms: D035843:Biomedical Research / Q000331:legislation & jurisprudence / Q000379:methods; D006801:Humans; D015233:Models, Statistical; D015203:Reproducibility of Results; D012107:Research Design; D011795:Surveys and Questionnaires