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Intelligence

Intelligence encompasses a number of mental abilities such as reasoning, planning and problem-solving. The topic of intelligence is one of the biggest and most debated in psychology. Learn more about some of the many theories of intelligence, the history of intelligence testing and much more.
Intelligence and IQ Testing
Intelligence has been an important and controversial topic throughout psychology's history. In addition to questions of exactly how to define intelligence, the debate continues today about whether it can be accurately measured. Learn more about intelligence and intelligence testing.
What Factors Determine Intelligence?
In addition to disagreements about the basic nature of intelligence, psychologists have spent a great amount of time and energy debating the various influences on individual intelligence. The debate focuses on one of the major questions in psychology: Which is more important-nature or nurture?
Theories of Intelligence
While there are numerous theories of intelligence, psychologists do not agree on a standard definition for the concept of 'intelligence.' Learn more about some of the major theories of intelligence that have emerged.
Fluid Intelligence vs. Crystallized Intelligence
Psychologist Raymond Catell suggested that there are two different types of intelligence: fluid intelligence and crystallized intelligence. Learn more about the differences between fluid and crystallized intelligence.
Emotional Intelligence
What exactly is emotional intelligence? Learn more about the history, importance, and measurements of emotional intelligence.
What's Your EQ? - Emotional Intelligence Test
Often referred to an emotional intelligence quotient (EQ), this ability to perceive, control, and evaluate emotions has been suggested to impact life success and interpersonal functioning. What is your emotional intelligence quotient? You can learn more by taking the emotional intelligence test.

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