·  B >   CATEGORIES

·  N >   ADULTS

·  N >   AGE (LAW)

·  N >   AGE DISCRIMINATION

·  N >   AGE GROUP COMPARISONS

·  N >   INTERGENERATIONAL CONFLICT

·  N >   JUVENILES

·  R >   GENDER GROUPS

·  R >   ORGANIZATIONAL GROUPS

·  R >   SOCIAL GROUPS