1. Home
  2. Education
  3. Psychology

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.
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.

Explore Psychology

More from About.com

  1. Home
  2. Education
  3. Psychology
  4. Cognitive Psychology
  5. Intelligence

©2008 About.com, a part of The New York Times Company.

All rights reserved.