A package meant to check the cancellation axioms of additive conjoint measurement. See Domingue (2013) for details.

Using the 'remotes' package:

install.packages("remotes")
remotes::install_github("ben-domingue/ConjointChecks")

Domingue, B. (2014). Evaluating the equal-interval hypothesis with test score scales. Psychometrika, 79, 1-19.