What really is intelligence? Many psychologists have been trying to figure out the meaning of this idea. Psychologist Spearman proposed that it is a combination of g (general intelligence) and s (specific abilities.) IQ tests demonstrate that items answered correctly have a positive correlation seeming to show that general intelligence determines how well a tester does overall. The specific abilities relate to specific questions and are different for those with the same IQ. Raymond Cattell and John Horn suggested that intelligence is composed of fluid intelligence(ability to learn to solve new problems) and crystallized intelligence(accumulated knowledge.) Sternberg hypothesized that the three components of intelligence are analytical(book smarts), practical(street smarts), and creative intelligence.
I wonder myself what intelligence is and must admit that the definition is certainly evasive. For example: A brilliant scholar may be reared in a intellectual home or have smart genes or both. How can we isolate the environment from heredity? I have considered the effect of determination and effort that a given student puts into learning versus the amount of time spent watching movies or playing video games. Surely, personal motivation has some impact on the overall intelligence of a person. On the other hand, there are those that put in their best effort but still struggle in school because they just can't grasp the concepts as quickly as other students. I am amazed at the many applications of various kinds of intelligence in everyday life.