In the early 1980s, Harvard researcher Howard Gardner proposed that, along with IQ, there may be multiple kinds of intelligence that people possess in varying quantities, including visual-spatial, logical-mathematical, and interpersonal (emotional) intelligence. According to this theory, someone high in interpersonal intelligence would likely excel at cooperating within a group, while someone with high levels of logical-mathematical intelligence would have a heightened capacity to understand numbers, patterns, and logic. But while the concept has gained much public attention— and is often used as part of personality or employment tests—many researchers dispute the idea of different intelligences and have criticized Gardner's theory, criteria, and research designs. For example, emotional intelligence cannot be reliably measured through testing as general intelligence can, the critics argue, and so it lacks the power to explain differences between people.
For more, see Emotional Intelligence.