dstudy_nested_ip        Design Study for a Nested Items-within-Person
                        Design
dstudy_pxi              Design Study for a Crossed Persons-by-Items
                        Design
gstudy_nested_ip        Estimate Variance Components for a Nested
                        Items-within-Person Design
gstudy_pxi              Estimate Variance Components for a Crossed
                        Persons-by-Items Design
gtheoryr-package        gtheoryr: Simple Generalizability Theory for R
