I found this description of ID from a web site of the Minnesota Department of Education.
I liked this part:
People in this career are people who tend to:
Consider achievement important. They like to see the results of their work and to use their strongest abilities. They like to get a feeling of accomplishment from their work.
Consider independence important. They like to make decisions and try out ideas on their own. They prefer jobs where they can plan their work with little supervision.
Consider good working conditions important. They like jobs offering steady employment and good pay. They want employment that fits their individual work style. They may prefer doing a variety of tasks, working alone, or being busy all the time.
Consider recognition important. They like to work in jobs which have opportunities for them to advance, be recognized for their work, and direct and instruct others. They usually prefer jobs in which they are looked up to by others.
Have artistic interests. They like work activities that deal with artistic forms, designs, and patterns. They prefer work which allows for self expression.
Have realistic interests. They like work activities that include practical, hands-on problems and solutions. They like to work with plants, animals, and physical materials such as wood, tools, and machinery. They often prefer to work outside.
Have enterprising interests. They like work activities that involve starting up and carrying out projects, especially in business. They like to lead and persuade others, make decisions, and take risks for profit.