The unionmodel will add all parameters to all groups that are free in at least one group, and the intersectionmodel will constrain all parameters across groups to zero unless they are free to estimate in all groups.
unionmodel(x, runmodel = FALSE, verbose, log = TRUE, identify =
TRUE, ...)intersectionmodel(x, runmodel = FALSE, verbose, log = TRUE, identify =
TRUE, ...)
A psychonetrics model.
Logical, should the model be updated?
Logical, should messages be printed?
Logical, should the log be updated?
Logical, should the model be identified?
Arguments sent to runmodel
An object of the class psychonetrics (psychonetrics-class)