When people read Lenore's descriptions of types and attitudes, or even the attempts at exegesis posted on this site, they seldom recognize themselves in their dominant function. The reaction is usually something like, "Whah? Maybe sorta kinda, but this hardly seems like me."
A dominant function, after all, is your main universe of description, and a universe of description does not include itself. It's the lens, not what you see. The dominant function is so ingrained in your personality that you might think that everyone has it also. Jung says that he took a while to figure out that not everyone else was an Introverted Thinker (has anyone else seen this quote or know where it is?). Since everyone has arms, you wouldn't say "I'm a person with arms" when you describe yourself. Same with the dominant function[....]
First, people do usually identify with descriptions of their secondary function. Watching the INTJ and INTP discussion lists, people who are new to the theory often mistake their secondary function for their dominant function. INTJs, for example, often think of themselves as primarily rational in the sense of being "systematic", and reasonably infer that "thinking", perhaps "introverted thinking", would be their dominant function. INTPs often think of themselves as primarily imaginative, outside-the-box thinkers, and reasonably infer that "intuition", perhaps "introverted intuition", would be their dominant function.