There are four primary DiSC styles: dominance, influencing, steadiness, and conscientiousness. Of course, many people have a secondary DiSC style, so one often finds combinations such as Si or DC.
Dominance: D personalities are blunt and direct. They get straight to the point and don't waste time with chit-chat or idle banter. They set ambitious goals for themselves and others, and they take great satisfaction in achieving their goals and getting things done - at which point, they're off to tackle the next challenge! The high-D style can easily alienate or antagonize others, especially the slower-paced C- and S-types, so Ds can maximize their effectiveness by learning where and when to apply patience and courtesy.
Influencing: I-types are social butterflies. They're optimistic, bubbly people, and often extremely charismatic. In the workplace, high Is gravitate towards team roles and group projects, which by definition involve collaboration and interaction with other people. I-types can risk irritating others with their abundant enthusiasm - particularly the more skeptical Cs and Ds. To be most effective, Is should learn when to reign in their natural enthusiasm and question something more deeply.
Steadiness: High-S people place great value on the feelings of others, and they go out of their way to ensure that everybody feels engaged, consulted, and part of the group. The enjoy helping others, and they try to create team consensus and group harmony. High S individuals are usually calm, easygoing, and unhurried. Their aversion to conflict means that they often go along with others rather than express a dissenting opinion, and they find it difficult to make fast decisions.
Conscientiousness: The C style is highly organized and structured. Cs value rational analysis and logical, fact-based decision-making. They try to be as accurate as humanly possible, and they're willing to invest time in triple- and quadruple-checking their work - which can be a source of irritation to more decisive Ds and Is, who want to make a fast decision and move on. Cs sometimes struggle in ambiguous situations, and outward displays of strong emotions make Cs uncomfortable.
We recommend the excellent Workplace profile as the cornerstone of a DiSC training program. This assessment is designed for anybody and everybody, helping them to (1) understand their own DiSC style and (2) learn to recognize other people's DiSC styles and adapt their own behavior accordingly. Other DiSC-based assessments are specifically tailored for sales professionals, managers, and leaders.