This is a very interesting debate between psychologists, can intelligence be narrowed down to just one number or do we have multiple intelligences. Gardner, H. in 1983 proposed that we have multiple intelligences which was a very different idea than what had been practiced up to that point. During the 20th century an individuals IQ was measured and was referred to as "g". However, during the 1970s and 1980s researchers began to question this idea that "g" was all there was to intelligence and in fact it is still highly debated today.
In Gardner's theory intelligence is not based off of one thing but several different areas can be looked at which would have a different intelligence. Further, he explains that different parts of the brain are responsible for different aspects of intelligence. Gardner came up with eight intelligences:
1) Linguistics: Shakespeare, J.K. Rowling, Dr. Seuss, Woody Allen
2) Musical: Mozart, Lauryn Hill, Andrea Boccelli, Paul McCartney
3) Logical-Mathmatical: Albert Einstein, Carl Sagan, Marie Curie, B.F. Skinner
4) Spatial: Picasso, Frank Lloyd Wright, Leonardo DaVinci, Van Gogh
5) Bodily-kinesthetic: Charlie Chaplin, LeBron James, Serena and Venus Williams
6) Interpersonal: Ghandi, Abraham Maslow, Oprah Winfrey
7) Intrapersonal: Plato, Hermann Rorschach, Helen Keller, Bill Gates
8) Naturalist: Charles Darwin, Jane Goodall, Rachel Carson
The idea is that we may be low in one intelligence while another may shine out. Also we may have several areas that shine out.
Whether or not the theory is true or if it is just redundant is besides the point. The fact is that when we are creating our characters we need to look at their particular strengths and WEAKNESSES. Often we forget that Heroes shine in certain areas but they also always have a weakness. Superman and Kryptonite is a off the head example. Maybe we create someone who is extremely athletic but is not very good at being introspective. Or a person who is a genius who needs support because he/she can barely move (i.e. Raistlan and Carman in Dragonlance series). As authors we need to make the MC as believable as possible so that our readers will attach to them. Often I forget about the weakness that my MC has because I want her/him to have none because I want them to be perfect but, I can't do that :)
What weaknesses and strengths do your MC's have?