Content Validity Indices for Instrument Development R package contentValidity version 0.2.0 Computes content validity indices commonly used in instrument development and questionnaire validation, including the Item-level Content Validity Index (I-CVI), Scale-level Content Validity Index (S-CVI), modified kappa adjusted for chance agreement, Aiken's V, and Lawshe's Content Validity Ratio (CVR). Methods follow Lynn (1986) <doi:10.1097/00006199-198611000-00017>, Polit and Beck (2006) <doi:10.1002/nur.20147>, Aiken (1985) <doi:10.1177/0013164485451012>, and Lawshe (1975) <doi:10.1111/j.1744-6570.1975.tb01393.x>. Software Depends: R (>= 3.5) Imports: stats, graphics, grDevices Suggests: knitr, rmarkdown, testthat (>= 3.0.0) Rashed Alqahtani <rashed.alqahtani@gmail.com> Comprehensive R Archive Network (CRAN) Rashed Alqahtani [aut, cre] MIT + file LICENSE (https://CRAN.R-project.org/package=contentValidity/LICENSE) 2026-06-03 application/tgz https://CRAN.R-project.org/package=contentValidity doi:10.32614/CRAN.package.contentValidity