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Intelligence and Theories of Intelligence Psychologists define intelligence as the ability to learn, recognize problems, and solve challenges. To this effect, various theories have been advanced explaining the nature of intelligence. Some of the major theories of intelligence that have emerged over the years include general intelligence, primary mental abilities, triarchic theory of intelligence, and theory of multiple intelligences (De Meuse, 2017). The discussion focuses on the general intelligence theory, which is the model advanced throughout the paper including justification of the model and the use of IQ tests as a measure of testing intelligence as posited by the theory. The favorite theory for this scholar is the General intelligence theory advanced by Charles Spearman. The theorist described a concept of general intelligence as the g factor. Spearman applied factor analysis to determine some mental aptitude tests and the conclusion he established from the experiment is that the scores on the tests were characteristically similar (Sternberg, 2019). Individuals who performed well on one cognitive test tended to excel in other tests, whereas those who scored badly in one test also tended to perform poorly in other tests. Therefore, the conclusion from the general intelligence theory is that intelligence is an overall cognitive ability that is measurable.
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