ABOUT  THE  SIGMA  TEST

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Published (full test) in Mensalainen - Mensa-Finland   
Published (full test) in IQ Magazine - International High IQ Society   
Published (article) in ComMensal - Mensa Belgium   
Published (article) in Gift of Fire - Prometheus Society   
Published (article) in Papyrus - Glia Society  
Published (article) in Malba Tahan - Matemática Divertida  
Published (full test) in Sigma V  e-Magazine - Sigma V 
References on Web - Google search
 
Admission
 
The Sigma Test is accepted for admission in the following societies:
O Sigma Teste é aceito para admissão nas seguintes sociedades:

  
Sigma Society VI 99.9999999th percentile (+6sd)
Unicorn High IQ Society 99.99997th percentile
Sigma Society V 99.99997th percentile (+5sd)
Pars Society 99.99997th percentile
OLYMPIQ Society 99.99997th percentile
Sigma Society IV 99.997th percentile  (+4sd)
Platinum Society 99.9971th percentile (+4.0202sd)
Ludomind Society 99.9th - 99.99th percentile 
Veritas Society  99.99th percentile 
ISI-S 99.916th percentile (+pi sd)
Glia Society 99.9th percentile
Sigma Society III 99.87th percentile (+3sd)
Poetic Genius Society  99.5th percentile 
Sigma Society V subscriber 99.4th percentile (+2.5sd)
Pars Society subscriber 99.4th percentile
High Potentials Society 98th percentile
Smart Society 98th percentile
Sigma Society 97.7th percentile (+2sd)
High IQ Society for Humanity
Sigma Society III subscriber 93.3th percentile (+1.5sd)
World Association for Highly Intelligent People

   
 
 
What do prominent intellectuals say about the Sigma Test?
 
“Gosto imenso do Sigma Teste porque considero que em muitas questões precisa-se tanto inteligência como imaginação para resolvê-las.”  
  
Comment sent by Petri Widsten, from Finland, is Regent of Unicorn High IQ Society (IQ>180), member of Sigma Society VI (IQ above 196), Pi Society (IQ>176), ISI-S (IQ>151), Glia Society (IQ>150) and Mensa-Finland (IQ>132). Petri is holder a Ph.D. Summa Cum Laude in Chemistry (Helsinki University of Technology), speaks fluently 9 languages, 2nd. Highest Score in "Mensa International Contest 2001", 1st. Place on X-Test Contest. More about Petri. See also his comment on the new norm of the Sigma Test here.
AN EMPTINESS FINALLY HEAPED. THE SIGMA TEST
By Albert FRANK
(this article is published in ComMensal, Papyrus and Gift of Fire)

In 1999, a tragic emptiness appeared in the world of the " great" tests : For various reasons, the Mega, the Titan, The Power, The TFG shorts form of Cooijmans stopped being valid as tests of qualification, and the numerical section of the TFG long form has been suppressed.  
This emptiness has just been heapped : Hindemburg Melao Jr., founder of the Sigma Society (index.html) has created the " Sigma Test ", after a long and serious work, both in the realization of the test that in the establishment of norms. The test is available since September 2001.  
Who is Hindemburg Melao Jr., the founder of the Sigma Society? Born in Sao Paulo (Brazil) on January 15th 1972, he is a personality known in the world of chess. Melao has two world records in chess:  
- The longest announced checkmate in a simultaneous blindfold chess game, Sao Paulo, 1997 (mate in 12 moves, playing on 9 boards). This record is registered in the Guinness Book of Records, Brazilian Edition, 1998, pages 110 - 111.  
- The longest announced checkmate in a correspondence chess game: mate in 36 moves, in Special Class Tournament CXEB, published in Pi Society Journal - 05/00.  
He has written many relevant articles in the following fields: Mathematics, Physics, Astronomy, Psychology (problems concerning gifted children), and Research about the standardization of IQ tests.  
The Sigma Test : This test consists of 36 questions. These, weighted in ten levels of difficulties, are, above all, completely varied.  
What is particularly remarkable in this test ?  
- The increasing difficulty of the questions, that goes progressively from direct reasoning problems to questions needing a high power of reasoning using lateral (or divergent) thinking.  
- The questions concern a lot of various topics.  
- Very little preliminary knowledge seems to be required.  
- The standardization, obviously result of a long and serious work, is very clearly presented at the end of the test.  
- The weighted of the questions. It is practically the first time that, in a test, the " difficult " questions have a weight that seems proportional to the work and to the level of reasoning needed to solve them.  
The world of tests must thank Hindemburg Melao Jr. for having given him this test !  
  
Comment sent by Albert Fank, from Belgium. Albert is professor of Logic and Mathematics in Brussels and passed many years in Africa, teaching Chess and Mathematics. He was national champion of Chess in several countries and holds several titles of "National Chess Master." He was also Chess Champion of Brussels, author of significant international contests of puzzles, author of pedagogical works recognized internationally (including the book "Chess and aptitude", published by the U.S. Chess Federation). Albert is pilot and flying instructor, he is founder of Ludomind, an international society for authors of difficult, beautiful and original puzzles. Albert is Honorary Member of Pars Society, member of Sigma V, Platinum Society and member of several other high IQ societies. More about Albert. See also his comment on the new norm of the Sigma Test here.

"The SIGMA test was one of the most interesting things I have done in the realm of puzzles because the later questions were so clever and had so many different levels of solution. I finished the test as a personal challenge, and it gave me great satisfaction. Some of the SIGMA test puzzles are REALLY beautiful. They are a work of art!"  
 
Comment sent by Peter David Bentley, from Hong Kong, is member of Sigma Society V (IQ above 180), Post-doctoral in low temperature/high vacuum Physics - Dept of Engineering Science - Oxford University, Ph.D. in low temperature/high vacuum Physics - Dept of Engineering Science - Oxford University, Managing Director of INFICON Ltd (China). Peter also is Honorary Member of World Association for Highly Intelligent People, member of Mensa-UK, was Manager of Divison of “Hong Kong Productivity Council”, General Director of “VG Instruments Asia Ltd.”, General Manager of "Leybold China Ltd." and of "Balzers and Leybold China Ltd.", Director of Projects and Manager of Sales of “Edwards High Vacuum, UK”. Peter is a world authority in puzzles, co-founder of Ludomind, author of many hard and original puzzles and quizzes, he is holder of the second highest score in Sigma Test, perfected the solution 32 of the Sigma Test and proposed a very interesting ideas on questions 29 of the Sigma Test and 4 of the Sigma Test VI.

"(...) Um belíssimo exemplo de teste sem limite de tempo, com teto avaliado em 244 (sd16- p-QI) é o Sigma Teste, desenvolvido por Hindemburg Melão Jr.

Este teste é um desafio que todos deveriam experimentar, pois ao terminá-lo, certamente, você verá que as suas noções de lógica, linguagem e capacidade de enfrentar problemas estão muito melhores que quando você começou."

Fragmento extraído de um artigo de Guilherme Marques dos Santos Silva, do Brasil. Membro de Sigma V (QI>180), Platinum (QI>164), Ludomind (QI> ~160), Colloquy (QI>141), Mensa (QI>133) e Sigma (QI>132). Guilherme tem o 4o. maior escore no Sigma Test pela nova norma, foi 5o. colocado no vestibular para Engenharia da UFPR e 3o. no da PUC-PR. Guilherme é engenheiro civil e leciona Matemática, é autor de um algoritmo inovador para otimizar o tráfego de veículos terrestres, que será usado na Holanda. Em 2003, prestou vestibular para Medicina na UFPR, para testar um método que desenvolveu para maximizar as chances de acertos em questões cujas respostas não sejam conhecidas, que costuma usar para aconselhar seus alunos, e foi aprovado. A partir de 2004, estará desenvolvendo parceria com Hindemburg Melão Jr. na aplicação de seu método e o de Hindemburg no curso de heurística. Mais sobre Guilherme: http://www.gui.pro.br/

Thought tests and puzzles always have amused me, this is the first IQ-test I have bothered to send in for scoring. I found myself increasingly absorbed by the intellectual art behind the questions in this test. Together with achievement, I rank creativity on top of the scale, which you elegantly have combined with divergent / convergent thinking. Thank you for creating a great test. I now look forward to take the Sigma Test VI! Provided my scores are sufficient, I intend to apply for membership in the Sigma Society.

Comment sent by Ulf Westerlund, from Sweden. Member of Sigma IV, Ph.D. in Neuroscience, MD specialist in Neurosurgery, member of AANS (American Association of Neurological Surgeons) and EANS (European Association of Neurological Surgeons).

"I would like to take the Sigma Test. (Which I believe has the best end excellent questions.)" 
  
Comment sent by Emrehan Halici, from Turkey, born in 1956, Electr. Engineer (B.S., M.S.), Founder and owner of the Halici Informatics and Software Group of Companies, President of Turkish Intelligence Foundation (1995-...), Vice President of FIDE - Fédération Internationale Des Échecs (1998-2002), President of Turkish Chess Federation (1991-1999), Member of The Turkish Parliament (1999-2002), Member of MENSA. More about Emrehan

"Estou gostando muito do teste SIGMA. Já o imprimi e comecei a responder suas questões. Permita-me parabenizar pelo seu teste. De facto, é incomparavelmente melhor que os testes de QI que já fiz." 
  
Comment sent by Renato P. dos Santos, do Brasil, é Pós-doutorado em aplicações de Inteligência Artificial ao cálculo científico em Física (Institut für Algorithmen und Kognitive Systeme, Karlsruhe, Alemanha, em 1989 e Research Institute for Symbolic Computation, Linz, Áustria, em 1990). Doutorado em Física pelo Centro Brasileiro de Pesquisas Físicas, em 1987, com uma tese sobre potencial efetivo em modelos supersimétricos quirais. Mestrado pelo IFT, com tese sobre aspectos clássicos do monopólo magnético de Dirac. More about Renato. Veja também este artigo de Renato Santos sobre sociedades de alto QI: http://www.reniza.com/matematica/novidades/0212.htm#Artigo
"After the excellent experience with Sigma Test, which I liked very much as the beauty and elegance of the questions bring a great intellectual challenge and excitement, I want to apply for membership in Sigma Society, Sigma III." 
  
Comment sent by Reinhard Matuschka, from Germany, is member of.Sigma Society IV (IQ>164) and Mensa (IQ>133). Reinhard is Master of Computer Science, Master of Economcs and Master of Business Administration. 
This message was published on the forum of International High IQ Society (currently "International High IQ Society") on 7/31/2001
(http://www.highiqsociety.org/msgboard.mv?parm_func=showmsg+parm_msgnum=1011628)
 

-------------------------------------------------------------- 
Posted by FatalX (David Spencer) on 13:51:12 7/31/2001 from 152.163.205.81:  
  
The Sigma Society---Creative Fusion1  
  
I've just translated the Sigma Society Test -- which claims to test up to IQ 202, by levels (sigma) -- into English. Though I am uncertain about the scale, (I don't believe it could differentiate any higher than the 180-190+ level) the test itself is almost a relief.  
  
The problems are almost Pascal-like and highly creative. The test begins with basic Mensa/WAIS/Binet questions, which progressively turn into more interesting problems like correcting a false conclusion about Fermat's Theorem deriving from the Pythagorean, measuring lung capacity within a $ budget, approach diameters for a planet (from a parachute POV), weighing the Graphite on a piece of paper, developing methods for estimating a stranger's vocabulary, getting out of a cannibalistic situation by picking eggs and constructing a Sphere of Invisibility. 
  
Now I may be mistaken, but these seem much closer to the problems for which Vinci and Pascal are famous. 
  
Creative and Logical, with a high degree of unconventional thought required. I hear it's decently normed, too -- 
  
Email me if you want a copy of the translation. 
FatalX 

Comment posted by David Spencer (FatalX), from U.S.A., is one of the most outstanding members of the International High IQ Society. He is recognized in the community of high I.Q. for his high creativity and his perspicacious comments. 

"Thank you for letting me take the Sigma Test. It gave me a lot of headaches and I am impressed how anyone can have such brilliant ideas. And the founder must know all the answers..."  
   
Comment sent by Christian Hohenstein, from Germany, Ph.D., member of Sigma IV (IQ>164) and High Potentials Society (IQ>133). 
"This Sigma test is beautiful. I have never seen anything like this before. It is not an ordinary IQ test but a masterpiece in the art of testing a human's ability to solve the indissoluble. Wonderful Melao:)" 
 
Comment sent by Muhamed Veletanlic, form Sweden, member of Platinum (IQ>164), Sigma IV (IQ>164), ISI-S (IQ>151), Glia (IQ>150), Cerebrals (IQ>144), Poetic Genius Society (IQ>141), Existentia (IQ>137), High Potentials Society (IQ>133), VINCI (IQ>126), International High IQ Society (IQ>126), Order of Imhotep. M.Sc. in Electrical Engineering.

"The Sigma Test is undoubtedly the hardest intelligence test that I've encountered so far. I've enjoyed it a lot though as it is comprised of ingenious questions that could measure the depth of one's mathematical and logical reasoning abilities."

Comment sent by Nileon M. Dimalaluan Jr., from Philippines, member of ISI-S (IQ>151), CIVIQ Society (IQ>150), International Society for Philosophical Enquiry (IQ>150), Cerebrals (IQ>144), Sigma Society (IQ>133), High Potentials Society (IQ>133), VINCI (IQ>126) and International High IQ Society (IQ>126). He has a very high score in W-87 and very high scores in N-VCPE-R, X-Test, IHIQS Ultimate Test e SLSE-Form I.

"I also want to say to you that the Sigma Test is incredibly brilliant. It was by far the best test I have ever taken and enjoyed it very much."  

Comment sent by Dylan Taylor, from USA. He is MD and works with financial consultancy, has excellent scores on SAT and other tests, highest score on English version of the Giant Test given by the High Potentials Society. Dylan is member of ISI-S (IQ>151), CIVIQ Society (IQ>150), Glia Society (IQ>150), Sigma III (IQ>148), Cerebrals (IQ>144), Poetic Genius Society (IQ>141), Existentia (IQ>137), High Potentials Society (IQ>133), Mensa (IQ>133), Mysterium Society (IQ>132), VINCI (IQ>126).

"I must say I thoroughly enjoyed this test. It was incredibly challenging and it has pushed my abilities to their outer limits." (...) "I have put more effort into this test than any other, and have even lost a few hours of sleep mulling over some of the toughest questions. My favorite question was #32. I am looking for this test to give me a good indication of what my true capabilities are. I believe I can go beyond Mensa and qualify for Sigma III, or perhaps even higher. Please accept this exam as my best effort, as much time and work have gone into it. Thank you!"

Comment sent by Wade Graydon Penman, from Canada, member of Sigma IV (IQ>164), former member of Mensa (IQ>133).

"I am very pleased with the result esp. because it is a good result on without a doubt the best test to be found on the web." (...) "It was for me a true pleasure to take it, as it was both challenging and fun. The Sigma Test is simply a beatiful test"

Comment sent by Bart Lindekens, from Belgium, member of Sigma V (IQ>180), Platinum (IQ>164), Ludomind (IQ> ~160), ISI-S (IQ>151). He works as a risk manager (bank). He has one of the highest scores on the Sigma Test (3rd place in the old norm).

"Thank you for a fascinating, thrilling and a very challenging test! I will recommended it to friends and colleagues who might be interested in this kind of challenge. My next mission will be Sigma Test VI."  

Comment sent by Kristian Heide, from Norway, excellent score on Titan and other tests, member of Sigma Society IV (IQ>164), One-in-a-Thousand Society (IQ>150), Mensa-Norway (IQ>133), Ph.D. Student and M.Sc. in Astrophysics, previous national record holder in egg throwing (1992-96). About this record, Kristian comment: "I guess that gave me an advantage on problem no. 34 on The Sigma Test ;-)." He is creator of an innovative system for sporting ranking, creator of a new method for ranking of Think Fast. See also his comment on the new norm of the Sigma Test here.

"I've been having a look over The Sigma Test (which is a much respected test) and have decided I will have a go at it this year. Everyone in IQ land should try this test, I think!" 

Comment sent by Michael Dempsey, from United Kingdom, member of Platinum (IQ>164), ISI-S (IQ>151), Glia (IQ>150), CIVIQ (IQ>150), Sigma III (IQ>148), Mensa (IQ>133), Mysterium (IQ>132)) and International High IQ Society (IQ>126). Michael is Honours degree B.Sc. in Chemical Analysis.

"Soy un reciente miembro de Sigma Society. Acabo de ver publicadas en la página de la organización las correlaciones existentes entre el sigma test y otros tests. Estoy de acuerdo en algunos principios que inspiran el Sigma Test, tales como que hay que premiar el razonamiento profundo sobre la rapidez, que las preguntas de elección múltiple dan lugar a aciertos 'accidentales', etc." 

Comment sent by Emilio López Aliaga, da Espanha, é membro de Sigma Society IV, da Mensa e programador da Copo Thierry, S.A

"I am currently working on your excellent Sigma Test. I am enjoying it very much."  

    Comment sent by Kaj Forsell Bio (Kaj by Kaj): 
    Born in Helsinki, Finland, 48 years ago, I have spent the last 25 years living in Sweden, Norway, UK, USA and Japan. I have a Business Degree from Stockholm University.  
    Career sofar: I like variation so I have covered many areas in the business world starting out as a public accountant and moving to financial management positions in a variety of industries, from finance to powergeneration and mobile phones. Currently I am President of a Software development and sales company in Japan.  
    I also enjoy different cultures which is why I have chosen to live in many different countries.  
    Hobbies and interests include food and drink, music (listening and playing the guitar), current affairs, surfing on the net and knowledge in general. I also have an aspiring interest in chess. When I have time and want to be outdoors I like to play golf. If you like challenging sports, this is it. The late Sir Winston Churchill already said that it's an impossible game with impossible tools. He might not have been the gratest atlhlete, but there's something to what he says.

"I enjoyed very much working on this test, it was fun." 

Comment sent by Staffan A. Svensson, from Sweden, is member of Sigma Society V (IQ>180), Prometheus (IQ>164), Ultranet (IQ>164) and Mensa (IQ>132), he have excellent score on several tests and highest score on the LS-36. 

Click here to sent your opinion
 
Other languages
 

Versão portuguesa -- Hindemburg Melão Jr.
English version -- Petri Widsten
Versión española -- Mariana González
Suomenkielinen versio -- Petri Widsten
Srpska Verzija -- Stevan Damjanovic
Version française -- par Petri Widsten
Versione italiana -- Rodrigo Malizia
Danish version -- David Udbjorg
Türkçe Versiyonu -- Baran Yönter
Svensk version -- Muhamed Veletanlic
Deutsche Version -- Christian Hohenstein
Nederlandse versie -- Bart Lindekens

 
 
SIGMA TEST - GENERAL INFORMATION (03.01.2004)

 

New norm with 137 testees and new method for standardization

Author: Hindemburg Melão Jr. 
Languages: Português, English, Español, Suomi, Srpska, Français, Italiano, Danish, Türkçe, Svenska, Deutsch, Dutsch, Polska, Esperanto

No. of questions: 36 
Time: no time limit 
Ceiling: around 200 
Standard deviation: around 16 
Number of testees in the final version: 77 (as of 30 Jan 2003)  
Number of testees in previous version (including Sigma Challenge): around 30 (until Aug. 2001) 
Best score: Petri Widsten - Finland (about Petri) 
  

Correlations with other tests (with 4 or more communal testees):  
 

Seguem alguns exemplos de correlação entre grandezas (estimativas) para proporcionar uma idéia do que representam as correlações entre -1 e 1: 
  
Correlação entre QIs de irmãos gêmeos homozigóticos criados juntos: 0.97 – 1.00 (correlação excepcional)  
Correlação entre altura e tamanho do pé: 0.90 – 0.95 (correlação excelente)  
Correlação entre cultura e QI: 0.60 – 0.80 (correlação muito boa)  
Correlação entre peso e altura: 0.40 – 0.60 (correlação boa)  
Correlação entre altura e QI: 0.10 – 0.30 (correlação baixa)  
Correlação entre renda e quantidade de pelos: 0.00 (correlação nula)  
Correlação entre taxa de mortalidade e taxa de crescimento demográfico: -0.30 (correlação negativa) 

    
Alguns dados empíricos:
Altura entre irmãos gêmeos monozigóticos: 0.95 (correlação fortíssima)  
Desempenho escolar entre irmãos gêmeos dizigóticos criados juntos: 0.77 (correlação muito forte)  
Altura entre irmãos gêmeos dizigóticos: 0.65 (correlação forte)  
Altura entre irmãos: 0.50 (correlação média)  
Peso entre crianças estranhas criadas juntas: 0.25 (correlação fraca)  
Altura entre crianças estranhas criadas separadas: 0.00 (correlação nula = sem correlação)  
___________________________  
Fonte: A inteligência humana (H. J. Butcher)

 

Saiba quantas vezes uma pessoa com determinado QI é mais inteligente que a média (cálculos feitos com base na nova norma do Sigma Test).

Uma pessoa com QI 132 é tão inteligente quanto 20 pessoas normais (QI 100) em sinergia, ou seja, produz intelectualmente tanto quanto 20 pessoas normais trabalhando juntas.

O Homo sapiens é mais inteligente do que o 30 Homo erectus somados.

Uma pessoa com QI 108 é duas vezes mais inteligente que uma pessoa normal.

Um gênio com QI 150 é mais inteligente do que 160 pessoas normais juntas.

Se a inteligência de todas as pessoas que já viveram fosse somada e colocada numa só pessoa, essa pessoa teria QI em torno de 400.

São necessárias 50 crianças normais com 10 anos para conseguir resolver os mesmos problemas que um adulto normal consegue.

A cor amarela indica que os dados são inacurados

Mais detalhes aqui:
http://planeta.terra.com.br/educacao/sigmasociety/iq_classifcation_www.sigmasociety.com.xls

New norm 2004 – 137 testees

Certificates emitted starting from January 1, 2004 will use the new norm.

Certificates posted between 12/24.2003 and 12/31/2003 will include two certificates, one with the old norm and other with the new norm.

If you received a certificate with the old norm and you wants receive also a certificate with the new norm, you should pay the fee 10 Euros.

Important explanations:
About the new norm (very important)
What is the true cut-off in the high IQ societies?
Comments on the new norm

To know your score with the new norm, download one of the spreadsheets:
New norm Excel XP
New norm Excel 95

Nova norma 2004 – 137 testees

Certificados emitidos a partir de 1 de janeiro de 2004 usarão a nova norma.

Certificados postados entre 24/12/2003 e 31/12/2003 incluirão dois certificados, um com a norma antiga e outro com a nova norma.

Se você recebeu um certificado com a norma antiga e deseja receber também um certificado com a nova norma, você deve pagar uma taxa de 10 Euros.

Esclarecimentos importantes:
Sobre a nova norma
(muito importante)
What is the true cut-off in the high IQ societies?

Comentáfrios sobre a nova norma

Para saber seu escore com a nova norma, faça download de uma das planilhas abaixo:
New norm Excel XP
New norm Excel 95

 

See also the comments about the new norm:

"Obrigado por enviar-me as novas normas do ST. Pelo que vejo, nao tem limite a sua criatividade e originalidade. Poderia enviar o seu metodo para algum jornal de psicologia especializada em QI elevado! Ou ao Journal of Right Tail Psychometrics."

(Comment sent by Petri Widsten)

Your article and work is fantastically interessant!! It can be something *great* for a *good* psychometric journal.

(Comment sent by Albert Fank)

(This is the full e-mail received from our friend Kristian Heide):

Dear Melao,

I would very much like to receive a certificate based on the new norm of The Sigma Test. I will send the 10 Euros to your address in Sao Paulo. I have moved since you sent me the last certificate. My new address is:

Kristian Heide (This part, with his address, was excluded)

I understand that you must have put a tremendous amount of work into the process of making the new norm. I hope other test-makers will adopt your method. Your methodology with different weighting factors seems much better and superior to a system where all problems are assigned to the same weighting factor. You have put common sense into good practical use based on a sound theoretical framework.

Another strength that follows your tests (ST and STVI) is that you allow fractional points to be given. If we look at how Ronald H. is scoring the Titan test we see a whole different approach. He is only interested in the answers, not in the reasoning and logic behind. It is easy to see the weakness in Ronald’s approach. Not only is he using the same weighting factor for each problem; he is also not rewarding any points whatsoever for a close to perfect (but not correct) solution.

By allowing fractional points you need to design problems to fit with your ideology. Especially on the more difficult problems, where the fractional points are more important, I think it is very fruitful to design problems that, in themselves, are both diverse and complex. Even if a person is not able to solve the whole problem perfectly he is nevertheless motivated to start on it and give it his best shot because he knows points will be rewarded for a partial solution also. I think a test that is actually able to motivate the ones that decide to take the tests to do their absolute best, is a successful test. And when the scoring system in addition is fair, just and correct, I think the test is as complete as it can be. And that is what I believe you have succeeded in doing with your tests. You motivate, and you have a superior scoring system.

Some months ago I sent an e-mail to the designers of Thinkfast (they have now an online version that is very similar to the Thinkfast software). I have done some analysis of their scoring system, and found many weaknesses in it, which I told them about. First they did what you did with TST: they did their best the first time they designed the program by putting up the scoring rules. You did the same on TST by “guessing” each problem’s weighting factor. This is sound. But when more information comes forth, one must be ready to refine the rules. The Thinkfast designers have failed to do this. Their scoring system is roughly as follows: There are 6 games. G1 is the simplest (more primitive brain functions), and G6 the most complex. And they, correctly, use higher weighting factors for the more complex games. But they fail to give extra credit when you are able to perform, on any game, extremely well regarding to percentile. If we use G1, simple reaction time to a simple stimulus, as an example. If your reaction time is 160 ms, this is pretty fast and rewarded accordingly. If your reaction time gets as low as 140 ms, this is only rewarded according to a mathematical formulae that is purely theoretical and not empirical. There is nothing in the formulae (for later versions of the software) that tests for percentile (even though the data is available), so the extra points given are not enough. And, even worse, should your reaction time be 120 ms the scoring system does not give you the very high extra credit you deserve. Since no one has ever before performed with a reaction time at 120, this performance is so extreme that it should be reflected in the scoring. When fewer people are able to perform at a certain level, the weighting factors should be adjusted accordingly: Exactly as you did with TST. And as the TF designers should have done. They wrote me back, and they agreed. But I doubt they will do the work necessary to change their method.

I was hoping to write something for WAHIP about this and some other specifics regarding Thinkfast, but never seem to find the time for it. In addition I have been involved in some local Mensa activities, which takes some resources. Also, I want to finish with STVI, but I never feel really finished. There are always some more things to investigate and discuss. But I find pleasure in working with this test, and that is perhaps the most important thing.

I hope the next year will leave me with some spare time for interesting projects. Exciting projects are easy to find, but finding the time to follow up on them...well, that’s the key factor.

Best wishes for the new year to you from

Kristian.

"Quando abri a mensagem, pensei em ler depois, devido ao tamanho do artigo. Quando comecei a entender, no entanto, não pude evitar a leitura até o final, ainda que tenha lido rapidamente, sem me deter nos detalhes.

Muito embora não conheça o assunto suficientemente bem para dar uma opinião segura, nunca vi método que pudesse ser tão coerente, porque, finalmente, encontrou-se uma definição realmente clara do que é QI e de como ele pode ser medido. Gostaria de lhe dar os parabéns."

(Comment sent by José Antonio Francisco, from Brazil, member of Platinum and Sigma IV)