For example, for studying the costume of actors in ads we have,
As in the original study, each discernible adult model was classified into one of four ordinal categories of the dress (Soley & Reid, 1988). Dress differs primarily by the amount of clothing worn by models in the advertisements, and has four levels: (1) demure, (2) suggestive,
(3) partially-clad, and (4) nude.