Mensa "provides a forum for intellectual exchange among members. Its activities include the exchange of ideas by lectures, discussions, journals, special-interest groups, and local, regional, national, and international gatherings; the investigations of members' opinions and attitudes; and assistance to researchers, inside and outside Mensa in projects dealing with intelligence or Mensa."

The following is a chart of I.Q. scores from 100 to 202, using 16 I.Q. points per standard deviation. I have mapped in Mega (6th norming), Titan (1st norming), and Ultra Test (July 1, 1996 results) raw scores. The sigma column shows the standard deviation of each I.Q. score; sigma = (IQ-100)/16. The percentile for each I.Q. score was calculated using the Microsoft Excel function NORMDIST. The rarity column shows how many people in the general population are expected to achieve this percentile or higher.