title: Item response theory in affective instrument development: an illustration.
authors.forename: Nantawadee P
authors.initials: NP
authors.lastname: Lee
mesh_terms: D019052:Depression, Postpartum / Q000175:diagnosis; D005260:Female; D006801:Humans; D015233:Models, Statistical; D015399:Nursing Research / Q000379:methods*; D011594:Psychometrics / Q000379:methods*