Here's some info about the extra dimension/layer of inner v's outer directed taken from the following site: 
http://www.context.org/iclib/ic03/srivals/
                                       
 History is not the only way to try to probe the roots of our   culture’s vision. The following excerpt (reprinted with permission) from   a recent report by the VALS Group at SRI International (Menlo Park, CA   94025) suggests some of the current diversity within our culture. A  more  extensive discussion of the VALS research is in The Nine American Lifestyles, 
by Arnold Mitchell, published by Macmillian.
 
VALS – short for values and lifestyles – is a way of viewing people  on  the basis of their attitudes, needs, wants, beliefs, and  demographics.  The VALS program was created by SRI International in 1978  in an attempt  to "put people" into the thinking of those of us trying to  understand  the trends of our times – in the marketplace, economically,   politically, sociologically, and humanly. The approach is holistic,   drawing on insight and many sources of data to develop a comprehensive   framework for characterizing the ways of life of Americans.   Conceptually, VALS owes a major debt to the findings of developmental   psychology. Our initial speculations have now been extensively   confirmed, honed, and extended in field research. The system is   currently being applied in many areas of business and is evoking   interest in circles as diverse as sociology, politics, law, education,   and medicine.
 
A basic tool of the VALS program is the VALS typology. This typology  is  divided into four major categories, with a total of nine lifestyles.   These are:
 
- Need-Driven
- -Survivor lifestyle
 
- -Sustainer lifestyle
 
 
- Outer-Directed
- -Belonger lifestyle
 
- -Emulator lifestyle
 
- -Achiever lifestyle
 
 
- Inner-Directed
- -I-Am-Me lifestyle
 
- -Experiential lifestyle
 
- -Societally Conscious lifestyle
 
 
- Combined Outer- and Inner-Directed
   
 
It should be understood from the start that these lifestyle  categories  are not fixed and immutable. Many people grow from one level  to another  as children, as adolescents, and as adults. Some very few may  start at  the bottom and reach the top within a lifetime, but far more  common is  movement of a level or two.
 The VALS typology is hierarchical. The prime development thrust is   from Need-Driven through Outer- Directed and Inner-Directed phases to a   joining of Outer- and Inner-Direction. These major transitions are seen   as crucial way-posts in the movement of an individual (or a society)   from immaturity to full maturity. Three of the four major developmental   categories are subdivided into lifestyle phases representing stages of   advancement within the main category.
 
By "maturity," we specifically mean psychological maturity. Very   generally, psychological maturation is marked by a progression from   partial toward full realization of one’s potential. It involves a steady   widening of perspectives and concerns and a steady deepening of the   inner reference points consulted in making important decisions. Thus,   the role of habit and "stock answers" abates as a person matures, and   the person becomes increasingly more complex and self-expressive in a   values sense.
 This hierarchy should be thought of as a nested model, with each  stage  "burying," as it were, previous stages. This means that an   individual’s totality – like the layers of an onion – consists of inner   "spheres" of values relating to stages of development that often date   back to childhood or adolescence. Hence, the more developed a person is,   the more complex his or her value structure and the more diverse the   range of value-based reactions. This is why highly developed people   often identify with many – even all – of the VALS levels: They are all   of them!
 
In the paragraphs that follow, we have tried to describe the   psychological essence of each segment of the typology and, in so doing,   to provide a feeling for the widening concerns and multiplying values  of  people as they move through the typology.
 
THE NEED-DRIVENS
 The Need-Drivens are people so limited in resources (especially   financial resources) that their lives are driven more by need than by   choice. Much evidence shows that they are the furthest removed from the   cultural mainstream, are the least aware of the events of our times,  and  are most inclined to be depressed and withdrawn. Values of the   Need-Driven center around survival, safety, and security. Such people   tend to be distrustful, dependent, unplanning. Many live unhappy lives   focused on the immediate specifics of today, with little sensitivity to   the wants of others and little vision of what could be. We divide the   Need-Driven category into two lifestyles: Survivor and Sustainer.
 
Survivors (4% of the population aged 18 and over in  1981) are the  most disadvantaged in American society by reason of their  extreme  poverty, low education, old age, and limited access to the  channels of  upward mobility. They are people oriented to tradition but  marked by  despair and unhappiness. Many, now infirm, once lived  lifestyles  associated with higher levels of the VALS hierarchy. Other   generation-after-generation Survivors are ensnared in the so-called   "culture of poverty."
 
Sustainers (7% of population) are a group struggling  at the edge of  poverty. They are better off and younger than Survivors,  and many have  not given up hope. Their values are very different from  those of  Survivors in that Sustainers have advanced from the depression  and  hopelessness typical of Survivors to express anger at the system  they  see as repressing them, and they have developed a street-wise   determination to get ahead. Many operate in the underground economy.
 
THE OUTER-DIRECTEDS
 This large and diverse category is named to reflect the central   characteristic of the people within it: The Outer-Directeds conduct   their lives in response to signals – real or fancied – from others. "Out   there" is what is most important. Consumption, activities, attitudes –   all are guided by what the outer-directed individual thinks others  will  think. Psychologically, Outer-Direction is a major step forward  from the  Need-Driven state in that the perspective on life has  broadened to  include other people, a host of institutions, shared  goals, and an array  of personal values and options far more complex and  diverse than those  available to the Need-Driven. In general, the  Outer-Directeds are the  happiest of Americans, being well attuned to  the cultural mainstream –  indeed, creating much of it. The VALS  typology defines three principal  types of outer-directed people:  Belongers, Emulators, and Achievers.
 
Belongers (39% of population) constitute the large,  solid,  comfortable, middle-class group of Americans who are the main   stabilizers of society and the preservers and defenders of the moral   status quo. Belongers tend to be conservative, conventional, nostalgic,   sentimental, puritanical, conforming. The key drive is to fit in – to   belong – and not to stand out. Their world is well posted and well lit,   and the road is straight and narrow. Family, church, and tradition loom   large. Belongers are people who know what is right, and they adhere to   the rules. They are not much interested in sophistication or   intellectual affairs. All the evidence suggests that Belongers lead   contented, happy lives and are relatively little vexed by the stresses   and mercurial events that swirl around them.
 In terms of psychological maturity, Belongers are ahead of the   Need-Drivens in having a much wider range of associations (both personal   and institutional), a longer term focus for planning their lives, and a   less opportunistic pattern of behavior. These are people well   integrated with their surroundings.
 
Emulators (8% of population) live in a wholly  different world from  that of Belongers. Emulators are trying to burst  into the upper levels  of the system – to make it big. The object of  their emulation is the  Achiever lifestyle. They are ambitious, upwardly  mobile,  status-conscious, macho, competitive. Many see themselves as  coming  from the other side of the tracks and hence are intensely  distrustful,  are angry with the way things are, and have little faith  that "the  system" will give them a fair shake. Emulators tend not to be  open in  their feelings for fear of alienating those in authority, on  whom they  depend to get ahead. The Emulator group contains a higher  fraction of  minorities (24%) than any VALS group other than the Need-  Drivens.
 
Psychologically, Emulators are a step ahead of Belongers in that they   ask more of themselves and the system and have assumed greater personal   responsibility for getting ahead instead of drifting with events in the   style of many Belongers. On the other hand, Emulators seem often to   have unrealistic goals. In truth, many are not on the track to make them   Achievers, but they appear not to realize this.
 
Achievers (20% of population) include the leaders in  business, the  professions, and government. Competent, self-reliant,  efficient,  Achievers tend to be materialistic, hard-working, oriented to  fame and  success, and comfort loving. These are the affluent people who  have  created the economic system in response to the American dream. As  such,  they are the defenders of the economic status quo. Achievers are  among  the best adjusted of Americans, being well satisfied with their  place  in the system. Only 5% of Achievers come from minority  backgrounds.
 
Achievers are psychologically more advanced than Emulators in having a   wider spectrum of values, in being more open and trusting, and in   clearly having brought their ambitions into better alignment with   reality. Achievers are supporters of technology and are open to   progress, but they resist radical change. After all, they are on top and   too radical a change might shake them off!
 
THE INNER-DIRECTEDS
 People we call the Inner-Directeds contrast with the Outer-Directed  in  that they conduct their lives primarily in accord with inner values –   the needs and desires private to the individual – rather than in accord   with values oriented to externals. What is most important to such   people is what is "in here" rather than what is "out there." Concern   with inner growth thus is a cardinal characteristic. Inner-directed   people tend to be self-expressive, individualistic, person-centered,   impassioned, diverse, complex.
 
It is important to recognize that, in American society today, one can   hardly be profoundly Inner-Directed without having internalized   Outer-Directedness through extensive and deep exposure as a child,   adolescent, or adult. One implication is that inner- directed people   tend not to come from need-driven or inner-directed families. Some   measure of satiation with the pleasures of external things seems to be   required before a person can believe in or enjoy the less visible,   incorporeal pleasures of Inner-Direction. This means not that the   pleasures of the outer world disappear (for the VALS typology is a   nested model), but that inner needs become more imperative than outer   needs. From the psychological standpoint, then, Inner-Direction in   today’s Western culture represents an advance over Outer-Direction in   that it adds new values to old, thus increasing the range of potential   responses and the number of channels available for self-expression. For   children raised in strongly inner-directed families, however, the   psychological advance would involve the shift from Inner-Direction to   Outer-Direction. This would be true, for example, of people raised   according to the tenets of the great inner-directed Eastern cultures.
 
VALS has identified three stages of Inner-Directedness: I-Am-Me. Experiential, and Societally Conscious.
 
I-Am-Me (3% of population) is a short lived stage of  transition  from Outer- to Inner-Direction. Values from both stages are  much in  evidence. Typically, the I-Am-Me person is young and fiercely   individualistic to the point of being narcissistic and exhibitionistic.   People at this stage are full of confusions and emotions they do not   understand; hence, they often define themselves better by their actions   than by their statements. I-Am-Mes tend to be dramatic and impulsive.   Like cats, they have whims of iron. Much of their Inner-Direction shows   up in great inventiveness, a willingness to try anything once, and an   often secret inner exploration that will later crystallize into lifelong   pursuits.
 
As the I-Am-Mes mature psychologically, they become the 
Experientials (6%   of population). At this stage of Inner-Direction, the focus has  widened  from the intense egocentrism of the I-Am-Me to include other  people and  many social and human issues. Experientials are people who  most want  direct experience and vigorous involvement. Life is a light  show at one  moment and an intense, often mystic, inner experience the  next. They are  attracted to the exotic (such as Oriental religions), to  the strange  (such as parapsychology), and to the natural (such as  "organic"  gardening and home baking). The most inner-directed of any  VALS group,  these people also are probably the most artistic and the  most  passionately involved with others. Although intense, this is a   thoroughly enjoyable stage of life, full of vigorous activity (although   less so than at the I- Am-Me stage), and marked by a growing concern   with intellectual and spiritual matters.
 
The Societally Conscious (11% of population) have  extended their  Inner-Direction beyond the self and others to the society  as a whole –  in fact, sometimes to the globe or even, philosophically,  to the  cosmos. A profound sense of societal responsibility leads these  people  to support such causes as conservation, environmentalism, and   consumerism. They tend to be activistic, impassioned, and knowledgeable   about the world around them. Many are attracted to simple living and  the  natural; some have taken up lives of voluntary simplicity. Many do   volunteer work. The Societally Conscious seek to live frugal lives that   conserve, protect, and heal. Inner growth remains a crucial part of   life. Consequently, many Societally Conscious people assume a high   degree of self-reliance, which extends to holistic health and a sense   that they are in touch with inner forces that guide them.
 
COMBINED OUTER- AND INNER-DIRECTEDS: THE INTEGRATEDS
 At the pinnacle of the VALS typology is a small group we call the 
Integrateds (2%   of population). These rare people have put it all together. They meld   the power of Outer-Direction with the sensitivity of Inner-Direction.   They are fully mature in a psychological sense – able to see many sides   of an issue, able to lead if necessary, and willing to take a secondary   role if that is appropriate. They usually possess a deep sense of the   fittingness of things. They tend to be self-assured, self-actualizing,   self-expressive, keenly aware of issues and sentiments, and often   possessed of a world perspective. These highly unusual people are the   Lincolns and Jeffersons and Einsteins and Schweitzers and Huxleys and   Hammarskjolds of society.
 
LIFESTYLE TRENDS IN HARD TIMES
 Recent history has raised the question: What happens to the lifestyle   groups in hard times? This subject is addressed in depth in a VALS   report entitled 
Hard Times by Marie Spengler and Peter Teige.   The report was published in November 1980. The conclusions of the report   have proved prescient, as shown by lifestyle trends revealed in VALS   surveys conducted in April 1980 and October 1981.
 Four main things happen in hard times:
 
- First, the transitional lifestyle stages (especially  Emulator and  I-Am-Me)   tend to be much less prominent. Apparently, in  hard times  people will not   tolerate show- off, flibbertigibbet  lifestyles.
 
- Second, the number of people adopting the  deep and solid  traditional   lifestyle of the Belonger tends to  increase. We have  evidence of recent   growth in the number of  Belongers, reversing a  long-term downtrend. When   the going gets  rough, the safety,  familiarity, and supportiveness of the   Belonger  way appear to be  profoundly appealing.
 
- Third, the  ranks of the Societally Conscious expand. We impute  this   to the fact  that this lifestyle is already attuned to frugal  living. It   has the  further appeal of supporting many of the issues  brought into prominence    in periods of economic uncertainty.
 
- Fourth, although  an increase in the number of people living in  poverty   might be  expected, rather to our surprise we have not found a  major change   in  the number of Need-Drivens. Apparently, times are  still not bad enough    to have appreciably increased the number of  Americans who fit the  Survivor   and Sustainer categories, although the  number of Sustainers  reporting being   unemployed has skyrocketed. We  suspect that the  natural resilience of people   has something to do with  this. Over a  period of a year or two, hope for   better times remains.  If hard times  persist, the resilience may vanish   and many who now see  themselves  as Belongers (plus other groups) would   begin to take on the  psychic  attributes of the Need-Drivens.
 
 A LOOK AHEAD: WHITHER THE KIDS OF THE INNER-DIRECTEDS?
 One of the most interesting and potentially significant questions   raised by the VALS typology regards the lifestyles that the children of   Experiential and Societally Conscious parents will adopt. This   discussion is necessarily speculative because these two VALS types are   still so young (median age of Experientials is 26 and that of the   Societally Conscious is 38) that we are only beginning to see how their   children react on reaching age 18.
 We think that the children of the Inner-Directeds will tend to become  a  new, subtle, and effective kind of Achiever. This "new convert"   Achiever group, which will begin to develop in the coming decade, will   be fleeing the Inner- Direction of their parents just as current   l-Am-Mes are abandoning outer-directed family values. The notion is that   if you were raised without dolls, you’ll collect them as an adult; if   you have not visited the pasture on the other side of the road, you  must  journey there.
 
We think this potential addition to the VALS typology could be of   crucial importance for several reasons. First, this new kind of Achiever   will, we believe, bring an introspective entrepreneurial spirit to the   driving outer-directed segments of society. We expect this will have a   profoundly rejuvenating effect on the American system because the  person  who represents a blending of Inner-Direction and Outer-Direction  may be  particularly effective in getting things done.
 
This new class of Achievers will surely be creative and different,  just  as the I-Am-Mes of the 1960′s and 1970′s were. The new Achievers  will  insist on seeing things and doing things in their own way – and  they  are not likely to be slavishly imitative of any model.
 
Further, we speculate that they will prove to be the nation’s most   important source of leadership by the year 2000, for by then some will   have matured into the Integrated stage. These will be people long out of   Inner-Direction and recently out of Outer-Direction. This history, we   surmise, will equip them to be particularly effective leaders, because   they will be able to combine the executive strength of the   Outer-Direction with the human insight of Inner-Direction. With luck,   they will be able to devise higher order solutions to national problems   that combine the best in both ways of life.