'Communication Style'- is part of the way people relate to one another. At one end of the spectrum, people may be described as extrovert, which means socially outgoing, uninhibited, talkative and good at making and maintaining interpersonal contacts. Extroverts are generally happier when they are with other people and they need to be able to communicate with others as a part of their routine.

Those at the other end of the spectrum would be described as introvert, which means they will prefer to be on their own. They are quieter, more reflective and do not need constant interaction or communication with others to be effective or to feel fulfilled. They may also be less socially skilled, as a result of having less experience in dealing with others.

'Emotions' - also play a key role in determining behaviour. At one end of the emotional scale, people are described as calm, relaxed, unemotional and secure. They are happy to work under pressure and cope well with high levels of stress - indeed some even find it stimulating. They find it easy to take charge and make decisions.

At the other end of the scale, people are more apprehensive, finding it more difficult to make decisions as pressure on them increases. They tend to worry more, especially when they are in charge of something, and are slower to decide on a direction and act upon it. They also tend to find it more difficult to cope with stress and are more susceptible to short-term situational pressures, which can cause problems.

'Drive and Determination' - looks at how motivated we are to achieve success. Highly motivated individuals are quality driven, conscientious, competitive, independent and decisive. High achievement is also often found in those who do well academically and in those who perform well at work.

People with lower levels of drive are less exacting and are generally much less committed to a conventional career. This often has a very positive consequence, in that they tend to be more willing to question traditional values and assumptions and look for different ways of solving problems.

'Relationships with people' - measures how individuals relate to each other and focuses on how we reach decisions. Some people prefer the consensus approach to decision-making, involving those around them and consulting with them; others prefer to make their decisions independently, putting personal and business goals before the needs of others.

A strong orientation towards the needs of others might be more appropriate in a sales and service, or customer-facing role, while a more independent goal-focused approach might be seen as more important in managerial roles, though generalisations can be misleading.

'Thinking Style' - people at one end of the scale are seen by others, and themselves, as more original, less rule-bound, more open to change, more assertive, more independent of social influences, more achievement-orientated and more radical. They have a creative thinking style and are often seen as individuals capable of generating innovative solutions to problems and finding new ways of doing things.

At the opposite end they tend to have a more conserving attitude to change and a more adaptive thinking style. They are more conscious of, and influenced by, precedent, more sensitive to social influences, more cautious of change and less personally achievement-orientated.