Sit back and don't answer any questions while this computer program mysteriously gauges personal intelligence information.

Search engine and directory locates intelligence, personality, language, career, health and relationship tests on the Internet.

Interactive ancient civilizations IQ test covers people, places, and events from our past.

Learn about the activities and goals of the British chapter of this international high-IQ society. Take a Mensa IQ test, and find news updates.

Guide identifies various influences on the development of intelligence testing and details each contribution made to the field.

New York City-based organization has been created for people with certified IQs of more than 140. Become a member, access the chat rooms, and play interactive chess.

A short but challenging IQ test. These puzzles appeared in modified form in GAMES Magazine.

Psychological resource presents this quiz designed to measure math, logic, and reasoning aptitudes. Read the directions.

Offers a free IQ test with a 10-minute timer and automatically displays results and statistics. Also find quotes, trivia, and daily jokes.

Take a series of IQ tests, and get instant scores and answers. Includes a link to a test prep. center that lists books and software.

Read the history of these tests that measure the intelligence quotient. Find out what an IQ score means, and take a test.

Try this IQ test with variations ranging from easy to four very difficult. Links to other IQ resources.

Access a wealth of IQ tests with a high level of difficulty by Ron Hoeflin, Paul Cooijmans and Bill Bultas.