Howard Gardner proposed the theory of multiple intelligences, which argues that intelligence is not a single general ability but rather composed of at least eight specific intelligences. The eight intelligences are visual-spatial, linguistic-verbal, logical-mathematical, bodily-kinesthetic, musical, interpersonal, intrapersonal, and naturalistic. Gardner's theory challenged the traditional view that intelligence is a single general ability that can be measured primarily through standardized tests. Instead, he argued that each person possesses a unique blend of intelligences and we should recognize many different ways of learning.