From Nine American Lifestyles by Arnold Mitchell:

The need driven groups

Survivors - Old, intensely poor, fearful, far removed from the cultural mainstream. 4% of the U.S. adult population

Sustainers - Angry, resentful, street-wise, living on the edge of poverty, involved in the underground economy. 7% of the U.S. adult population.

The outer-directed groups

Belongers - Aging, conventional, content, intensely patriotic, traditional Middle Americans. 35% of the U.S. adult population.

Emulators - Young, ambitious, flashy, trying to break into the system. 9% of the U.S. adult population.

Achievers - Middle-aged, prosperous, self-assured; the leaders and builders of the American dream. 22% of the U.S. adult population.

The inner-directed groups

I-am-me - Very young, narcissistic, impulsive, exhibitionist; a transitional state to Inner-Direction. 5% of the U.S. adult population.

Experiential - Youthful, seeking direct experience, artistic, intensely oriented toward inner growth. 7% of the U.S. adult population.

Societally conscious - Mission-oriented, mature, successful, out to change the world. 8% of the U.S. adult population.

The combined outer- and inner-directed group