title: Validity: a concept at the heart of research.
abstract: This article considers the nature of validity and further explores the relationship between validity and reliability. The different forms of validity are discussed and the importance of developing more valid measures of nursing activity is highlighted.
authors.forename: M
authors.initials: M
authors.lastname: Nolan
authors.forename: R
authors.initials: R
authors.lastname: Behi
mesh_terms: D015982:Bias; D003627:Data Interpretation, Statistical; D006801:Humans; D015399:Nursing Research / Q000379:methods / Q000592:standards*; D015203:Reproducibility of Results