What is the world's largest society for high-IQ individuals?
High IQ society deviation of 15 IQ points): High IQ society A high IQ society is an organization that limits its membership to people who have attained a specified score on an IQ test. The oldest and best-known such society is Mensa International, which was founded by Roland Berrill and Lancelot Ware in 1946. Other societies are Intertel, founded by Ralph Haines in 1966; the Triple Nine Society, founded in 1978; the Prometheus Society; and the Mega Society. High IQ societies typically accept a variety of IQ tests for membership eligibility; these include WAIS, Stanford-Binet, and Raven's Advanced Progressive Matrices, amongst many others
IQ classification an interval measurement unit. Besides the inherent error band around any IQ test score because tests are a "sample of learned behavior", IQ scores can also be misleading because test-givers fail to follow standardized administration and scoring procedures. In cases of test-giver mistakes, the usual result is that tests are scored too leniently, giving the test-taker a higher IQ score than the test-taker's performance justifies. Some test-givers err by showing a "halo effect", with low-IQ individuals receiving IQ scores even lower than if standardized procedures were followed, while high-IQ individuals receive inflated IQ scores. IQ classifications for individuals also vary