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The concerns associated with SEMs are actually substantially worse for scores at the extremes of the distribution, especially when scores approach the maximum possible on a test ... when students answer most of the items correctly. In these cases, errors of measurement for scale scores will increase
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IQ test is 40 to 160. The standard scores on most other currently normed IQ tests fall in the same range. A score of 160 corresponds to a rarity of about 1 person in 31,560 (leaving aside the issue of error of measurement common to all IQ tests), which falls short of the Mega
Society's 1 in a million
137:
that the test author claims have been normalized using standard statistical methods. There is controversy about whether these tests have been properly validated. The Mega test specifically is described as a "nonstandardized test" by a psychologist who wrote a 2012 book on the history of IQ testing.
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as having the highest IQ ever recorded. Never mind that this record is based on a nonstandardized test put out by an obscure group known as Mega, supposedly the world's most selective organization of geniuses. Ignore the fact that test scores at the extreme ends of any distribution are notoriously
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requirement. IQ scores above this level have been criticized as being dubious as there are insufficient normative cases upon which to base a statistically justified rank-ordering. Very high or very low IQ scores are less reliable than IQ scores nearer to the population median.
335:
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27:
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From the article: "Although the approach that
Hoeflin takes is interesting, inventive, intellectually stimulating, and internally consistent, it violates many good psychometric principles by overinterpreting the weak data of a self-selected
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open to people who have scored at the one-in-a-million level or more on a particular test of general intelligence, called the Mega Test, claimed to be able to discriminate at that level. It was founded in 1982 by
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norm tables that provide you with such extreme values are constructed on the basis of random extrapolation and smoothing but not on the basis of empirical data of representative samples.
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substantially at the extremes of the distribution. Commonly the SEM is from two to four times larger for very high scores than for scores near the mean (Lord, 1980).
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No professionally designed and validated IQ test claims to distinguish test-takers at the one-in-a-million level of rarity of score. The standard score range of the
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once stated that the most elite ultra High IQ Society is the Mega
Society with percentiles of 99.9999 or one in a million required for admission.
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And what is that makes
Marilyn vos Savant so uniquely qualified to answer such questions? There is only one reason: she is listed in the
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Perleth, Christoph; Schatz, Tanja; Mönks, Franz J. (2000). "Early
Identification of High Ability". In Heller, Kurt A.; Mönks, Franz J.;
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The public profile of the Mega
Society increased with the publication of the Mega Test in 1985 by Hoeflin.
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Identification: The Theory and
Practice of Identifying Students for Gifted and Talented Education Services
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is just one of the reasons to be suspicious of reported IQ scores much higher than 160
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26:
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The Know-It-All: One Man's Humble Quest to Become the
Smartest Man in the World
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since July 1987, has been published since
January 1982, when it was called the
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Berliner, Uri (December 28, 1992). "Mega smart is very, VERY smart, indeed".
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Roger D. Carlson (1991). Daniel J. Keyser; Richard C. Sweetland (eds.).
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The Mega
Society accepts members on the basis of untimed, unsupervised
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Urbina, Susana (2011). "Chapter 2: Tests of Intelligence". In
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Guinness Superlatives Ltd., ed. (1983–1990). "Highest I.Q.".
361:
Morris, Scot (April 1985). "World's Most Difficult IQ Test".
162:. Currently, the journal is published on an irregular basis.
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739:"Chapter 12: Ability Testing & Talent Identification"
713:. Cambridge: Cambridge University Press. pp. 20–38.
628:"Stanford-Binet Intelligence Scales (SB5), Fifth Edition"
373:"For Minds of Mega, the Mensa Test, is a Real No-Brainer"
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Lemley, Brad (March 17, 1985). "The Mind of Genius".
652:. Cambridge: Cambridge University Press. p. 8.
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681:(2nd ed.). Amsterdam: Pergamon. p. 301.
489:(Volume VIII ed.). PRO-ED. pp. 431–435.
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679:International Handbook of Giftedness and Talent
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434:Lawrence A Pervin; Oliver P John, eds. (1999).
737:Lohman, David F.; Foley Nicpon, Megan (2012).
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8:
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748:. Waco (TX): Prufrock. pp. 287–386.
933:Wechsler Intelligence Scale for Children
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711:The Cambridge Handbook of Intelligence
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316:"Smarter than 99.9% of the rest of us"
122:to facilitate psychometric research.
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844:Levels of measurement: Ordinal scale
412:Greatness: Who makes History and Why
918:Stanford–Binet Intelligence Scales
630:. The Riverside Publishing Company
581:The Guinness Book of World Records
536:Castles, Elaine E. (6 June 2012).
216:"Constitution of the Mega Society"
143:The Guinness Book of World Records
14:
985:Organizations based in California
980:1982 establishments in California
970:Organizations established in 1982
923:Wechsler Adult Intelligence Scale
460:. Simon & Schuster. pp.
334:Derfner, Larry (August 8, 2003).
245:vos Savant, Marilyn Mach (1985).
709:; Kaufman, Scott Barry (eds.).
438:. Guilford Press. p. 632.
371:Graham, Ellen (April 9, 1992).
294:Fella, Answer (March 1, 2006).
269:Aviv, Rachel (August 2, 2006).
563:Guinness Book of World Records
154:The society's journal, called
1:
408:Simonton, Dean Keith (1994).
744:. In Hunsaker, Scott (ed.).
238:The Washington Post Magazine
214:Mega Society (August 2005).
928:Graduate Record Examination
416:. Guilford Press. pp.
400:The San Diego Union-Tribune
314:Cox, Jack (June 21, 2005).
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24:
542:. ABC-CLIO. p. 22.
296:"World's Smartest Fella"
251:. McGraw-Hill. pp.
854:Intellectual giftedness
436:Handbook of Personality
378:The Wall Street Journal
129:Criteria for acceptance
677:; et al. (eds.).
626:Roid, Gale H. (2006).
539:Inventing Intelligence
526:
452:Jacobs, A. J. (2004).
248:Omni I.Q. Quiz Contest
839:Intelligence quotient
864:Standardized testing
791:Mega Society history
707:Sternberg, Robert J.
675:Sternberg, Robert J.
902:Triple Nine Society
892:Mensa International
648:Hunt, Earl (2011).
367:. pp. 128–132.
271:"The Intelligencer"
21:
897:Prometheus Society
859:Human intelligence
650:Human Intelligence
606:"The Mega Society"
391:(also archived at
341:The Jerusalem Post
241:. pp. 14, 23.
194:"The Mega Society"
73:Official language
975:High-IQ societies
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874:High IQ societies
849:IQ classification
755:978-1-931280-17-4
688:978-0-08-043796-5
659:978-0-521-70781-7
549:978-1-4408-0338-3
276:The Village Voice
120:Ronald K. Hoeflin
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584:. p. 18.
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382:. p. A1
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336:"It smarts!"
325:. Retrieved
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285:. Retrieved
281:the original
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150:Publications
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111:Mega Society
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99:.megasociety
63:Membership
20:Mega Society
566:unreliable.
513:|work=
964:Categories
634:2006-07-25
386:2006-07-26
347:2006-10-29
327:2006-10-29
307:2006-10-29
287:2006-09-23
221:2006-07-25
179:References
555:31 August
515:ignored (
505:cite book
402:subs. req
380:subs. req
199:10 August
166:Criticism
34:Formation
882:Intertel
524:sample."
135:IQ tests
942:Related
911:Testing
826:High IQ
301:Esquire
92:Website
77:English
42:Founder
832:Topics
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611:16 May
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160:Circle
156:Noesis
949:Densa
742:(PDF)
253:31–36
113:is a
750:ISBN
715:ISBN
683:ISBN
654:ISBN
613:2011
586:ISBN
557:2013
544:ISBN
517:help
491:ISBN
466:ISBN
440:ISBN
422:ISBN
364:Omni
257:ISBN
201:2023
109:The
101:.org
52:Type
37:1982
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97:www
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