title: Measurement of informal selection processes.
mesh_terms: D000367:Age Factors; D001290:Attitude; D006126:Group Processes; D006127:Group Structure; D006760:Hospitalization; D006787:Hospitals, Veterans; D006801:Humans; D008297:Male; D008960:Models, Psychological; D010551:Personality; D010555:Personality Inventory; D012649:Self Concept