People are classified as fat, thin or muscular. People are classified along a scale according to weight. People are classified according to degree of expressiveness. People are classified as outgoing or withdrawn. Personality is what can be measured by a personality test.
Personality is self.
Write the type of approach after each example. People are classified as expressive or withdrawn. People are rated according to how expressive they are. People are assigned a point along a scale. People are classified into a limited number of groups.