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Last update: 30-5-2009

VOLKMAR WEISS

Der IQ-Fallensteller


The IQ-Trapper


All men are created equal but some are more equal than others.

The German counterpoint to "The Bell Curve":
The IQ Meritocracy: Intelligence, Social Structure, and Politics.


National IQ Means, Transformed from PISA Scores.

IQ and Global Inequality (see further below)

100 Highly Gifted Men have Highly Gifted Male Relatives

(classified by occupation and achievement)

Galton

Terman

Brimhall

Weiss

%

%

%

%

n (Weiss)

Probands

100

84+

100

97+

1972: 1329
1994:   357

Fathers

26

41

29

40

346

Brothers

47

-

49

49

220

Sons

60

64*

-

55

77

Grandfathers

14

-

9

9

681

Uncles

16

-

13

14

615

Nephews

23

-

-

22

76

Grandsons

14

-

-

-

-

Greatgrandfathers

0

-

-

4

1290

Uncles of the parents

5

-

-

5

1996

Cousins

16

-

9#

18

570

Greatgrandsons

7

-

-

-

-

Cousins of parents

-

-

-

11

2250

"+": classified by occupation; 100 %, if classified by test
"*": classified only by IQ; classification by occupation gives about 55%; n = 820.
"#": some cousins were still to young and did not have full opportunity to become distinguished
"-": no data

Sources:

  • Galton, Francis: Hereditary Genius. London 1869, p. 195.
    100 famous men (n = 43) of science (mathematics and natural sciences) have famous male relatives.

  • Oden, M. H.: The fullfillment of promise: 40-year follow-up of the Terman gifted group.
    Genetical Psychology Monographs 77 (1968) 3-93.
    The mean IQ (transformed to 100;15) of the sample of probands was 146 (n = 724); the cut-off score IQ 137.

  • Brimhall, Dean, R.: Family resemblances among American men of science.
    The American Naturalist 56 (1922) 504-547; 57 (1923) 74-88, 137-152, and 326-344.
    In 1915 questionnaires were filled in by 956 distinguished American men of science and their relatives.

  • Weiss, Volkmar: Mathematical giftedness and family relationship. European Journal for High Ability 5 (1994) 58-67.
    Highly gifted males (mean IQ 135 +/- 9) and their relatives in professions, typically associated with an IQ above 123.

  •  

     

    The Basic Period of Individual Mental Speed (BIP), Underlying IQ

    IQ of Nazi leaders, cited from: Gilbert, G. M.: Nuremberg Diary. New York: Signet Book 1947, p. 34; Wechsler-Bellevue IQ: Hjalmar Schacht IQ 143, Arthur Seyss-Inquart IQ 141, Hermann Göring IQ 138, Karl Dönitz IQ 138, Franz von Papen IQ 134, Erich Räder IQ 134, Dr. Hans Frank IQ 130, Hans Fritsche IQ 130, Baldur von Schirach IQ 130, Joachim von Ribbentropp IQ 129, Wilhelm Keitel IQ 129, Albert Speer IQ 128, Alfred Jodl IQ 127, Alfred Rosenberg IQ 127, Constantin von Neurath IQ 125, Walter Funk IQ 124, Wilhelm Frick IQ 124, Rudolf Hess IQ 120, Fritz Sauckel IQ 118, Ernst Kaltenbrunner IQ 113, Julius Streicher IQ 106 - "confirming the fact that the most successful men in any sphere of human activity - whether it is politics, industry, militarism or crime - are apt to be above average intelligence."

    The Population Cycle Drives Human History - from a Eugenic Phase into a Dysgenic Phase and Collapse.


    IQ Genetics by Data Mining

    Richard Lynn and Tatu Vanhanen: IQ and the Wealth of Nations.

    p. 73-80, Table 6.5: National IQ based on arithmetic means calculated by Lynn and Vanhanen (2002) and by Rindermann (2007), in parentheses PISA scores of "mathematical competence" 2003 and 2006 (Prenzel, Manfred et al. (eds).: PISA 2003. Münster: Waxmann 2004, p. 70, Table 2.9; or: PISA 2003: A Profile of Student Performance in Mathematics) , transformed into IQ (PISA scores, mean 500, SD 100, have to be transformed into IQ values, mean 100, SD 15, by adding or subtracting the deviation from the mean in the relationship 100 : 15 = 6,67, that means PISA 433 corresponds to IQ 90, PISA 567 to IQ 110, if PISA 500 is IQ 100):

    PISA 2006 data transformed into IQ: The PISA 2006 data (mean birth year of the subjects was 1991) on the mathematical scale are transformed into IQ in such a way that IQ 100 is the mean of the UK, the Netherlands and New Zealand (i.e. IQ 100 corresponds to a PISA score of 516). This seems to be a justified method of calibration because the mean IQ of the UK shows a downward trend, the IQ of the Netherlands seems to be nearly constant and New Zealand's trend is upward. The original mean of these three countries in the first book by Lynn and Vanhanen (2002) was IQ 100.

    Read the following data in this way: Finland IQ 97/101 (107/105), this means: Finland mean IQ given by Lynn and Vanhanen (2002) 97, by Rindermann (2007) 101 (from his adjusted value IQ 103 always subtracted 2, because the "Greenwich-IQ" of UK in his data is 102); PISA-IQ 2003 107, PISA IQ 2006 105.

    Afghanistan IQ 83/76, Albania IQ 90/81 (78/-), Algeria IQ 84/75, Angola IQ 69/58, Antigua and Barbuda IQ 75/60, Argentina IQ 96/87 (83/80), Armenia IQ 93/90, Australia IQ 98/99 (104/100) immigrants of the second generation (100), Aborigines (92) Non-Aborigines (105), Austria IQ 102/99 (101/98) Immigrants of the second generation, born and educated in Austria (84), Azerbaijan IQ 87/79 (-/94), Bahamas IQ 78/76, Bahrain IQ 83/85, Bangladesh IQ 81/73, Barbados IQ 78/77, Belarus IQ 96/90, Belgium IQ 100/98 (104/100) German speaking part (102/100) Flemish Flanders (108/104) French speaking Wallonia (100/96), Belize IQ 83/74, Benin IQ 69/60, Bermuda IQ -/88, Bhutan IQ 78/71, Bolivia IQ 85/85, Bosnia IQ -/82, Botswana IQ 72/73, Brazil IQ 87/82 (78/78), Brunei IQ 92/84, Bulgaria IQ 93/94 (87/85), Burkina Faso IQ 67/58, Burma IQ 86/79, Burundi IQ 70/59, Cambodia IQ 89/84, Cameroon IQ 70/59, Canada IQ 97/100 (105/101) immigrants of the second generation (99), Alberta (107) British Columbia (106) Manitoba (104) Newfoundland (103) New Brunswick (102) Nova Scotia (102) Ontario (104) Prince Edward Island (100) Quebec (106) Saskatchewan (102), Cape Verde IQ 78/67, Central African Republic IQ 68/59, Chad IQ 72/58, Chile IQ 93/87 (83/84), China IQ 100/105, Colombia IQ 89/78 (-/78), Comoros IQ 79/68, Congo (Brazzaville) IQ 73/59, Congo (Zaire) IQ 65/60, Costa Rica IQ 91/81, Croatia IQ 90/88 (-/93), Cuba IQ 85/82, Cyprus IQ 92/94, Czech Republic IQ 97/98 (102/99), Denmark IQ 98/97 (102/99), Djibouti IQ 68/58, Dominica IQ 75/62, Dominican Republic IQ 84/79, Ecuador IQ 80/86, Egypt IQ 83/82, El Salvador IQ 84/71, Equatorial Guinea IQ 59/53, Eritrea IQ 68/58, Estonia IQ 97/97 (-/100), Ethiopia IQ 63/59, Fiji IQ 84/82, Finland IQ 97/101 (107/105) Finns (107/105) Swedish minority (105/102), France IQ 98/98 (102/97) immigrants of the second generation (90), Gabon IQ 66/53, Gambia IQ 65/55, Georgia IQ 93/87, Germany IQ 102/97 (100/98) Immigrants from Turkey, descendants of first generation, born and educated in Germany (86), all immigrants of the second generation (84) ,PISA 2000/PISA 2003/PISA 2006: Baden-Wuerttemberg (102/101/100) Bavaria (102/104/101) Berlin (-/98/96) Brandenburg (96/98/97) Bremen (93/95/94) Hamburg (-/97/96) Hesse (98/99/97) Mecklenburg-Western Pomerania (98/99/97) Lower Saxony (97/99/96) North Rhine-Westphalia (97/97/96) Rhineland-Palatinat (98/99/97) Saarland (98/99/97) Saxony (100/103/101) Saxony-Anhalt (97/100/97) Schleswig-Holstein (99/99/97) Thuringia (99/101/99), Ghana IQ 71/62, Greece IQ 92/95 (92/91), Grenada IQ 75/61, Guatemala IQ 79/76, Guinea IQ 66/62, Guinea-Bissau IQ 66/57, Guayana IQ 84/79, Haiti IQ 72/57, Honduras IQ 84/78, Hongkong IQ 107/104 (107/104), Hungary IQ 99/98 (99/96), Iceland IQ 98/99 (102/98), India IQ 81/79, Indonesia IQ 89/84 (79/81), Iran IQ 84/83, Iraq IQ 87/85, Ireland IQ 93/96 (100/98), Israel IQ 94/94 (96/89), Italy IQ 102/99 (95/92) Basilicata (-/89) Bozen/South Tyrol (-/100) Campania (-/87) Emilia Romagna (-/97) Friuli-Venezia Giulia (-/100) Liguria (-/93) Lombardy (103/96) Piedmont (99/96) Puglia (-/88) Sardinia (-/87) Sicily (-/86) Trient (-/99) Tuscany (99/-) Veneto (102/99), Ivory Coast IQ 71/-, Jamaica 72/67, Japan IQ 105/103 (105/101), Jordan IQ 87/88 (-/80), Kazakhstan IQ 93/87, Kenya IQ 72/68, Kiribati IQ 84/77, Korea (North) IQ 104/100, Korea (South) IQ 106/104 (106/104), Kuwait IQ 83/81, Kyrgyzystan IQ 87/82 (-/69), Laos IQ 89/87, Latvia IQ 97/96 (97/95), Lebanon IQ 86/82, Lesotho IQ 72/57, Liberia IQ 65/57, Libya IQ 84/75, Liechtenstein -/97 (105/101), Lithuania IQ 97/92 (-/95), Luxembourg IQ 101/97 (99/96), Macau -/97 (104/101), Macedonia IQ 93/86 (80/-), Madagascar IQ 79/79, Malawi IQ 71/59, Malaysia IQ 92/95, Maldives IQ 81/72, Mali IQ 69/59, Malta IQ 95/96, Marianas IQ -/78, Marshall Islands IQ 84/81, Mauritania IQ 74/67, Mauritius IQ 81/87, Mexico IQ 87/83 (83/83), Micronesia IQ 84/76, Moldova IQ 95/92, Mongolia IQ 98/95, Montenegro (-/82), Morocco IQ 85/75, Mozambique IQ 72/59, Namibia IQ 72/60, Nepal IQ 78/75, Netherlands IQ 102/100 (106/102) immigrants of the second generation (90), New Caledonia IQ -/82, New Zealand IQ 100/99 (103/101) Whites (109) Maori (100), Nicaragua IQ 84/72, Niger IQ 67/59, Nigeria IQ 67/73, Norway IQ 98/98 (99/96), Oman IQ 83/75, Pakistan IQ 81/81, Panama IQ 85/76, Papua New Guinea IQ 84/80, Paraguay IQ 85/81, Peru IQ 90/79 (76/-), Philippines IQ 86/83, Poland IQ 99/97 (99/97), Portugal IQ 95/93 (95/92), Puerto Rico IQ 84/81, Qatar IQ 78/75 (-/70), Romania IQ 94/91 (-/85), Russia IQ 96/97 (95/94), Rwanda IQ 70/60, Saint Kitts and Nevis IQ 75/57, Saint Lucia IQ 75/57, Saint Vincent/Grenadines IQ 75/67, Samoa (Western) IQ 87/86, Sao Tome/Principe IQ 59/57, Saudi Arabia IQ 83/80, Senegal IQ 65/55, Serbia IQ 93/89 (with Montenegro 90/without 88), Seychelles IQ 81/78, Sierra Leone IQ 64/59, Singapore IQ 103/105, Slovakia IQ 96/97 (101/96), Slovenia IQ 95/97 (-/98), Solomon Islands IQ 84/76, Somalia IQ 84/58, South Africa IQ 72/64, Spain IQ 97/96 (98/94) Andalusia (-/92) Aragon (-/100) Asturias (-/97) Basque Country (100/98) Cantabria (-/98) Castile-Leon (100/100) Catalonia (99/96) Galicia (-/97) La Roja (-/101) Navarre (-/100), Sri Lanka IQ 81/76, Sudan IQ 72/67, Suriname IQ 89/87, Swaziland IQ 72/58, Sweden IQ 101/99 (101/98) immigrants of the second generation (91), Switzerland IQ 101/99 (104/102) immigrants of the second generation (92), German Swiss (106) French Swiss (104) Ticino (102), Syria IQ 87/82, Taiwan IQ 104/106 (-/105), Tajikistan IQ 87/79, Tanzania IQ 72/68, Thailand -/89 (87/85), Timor-Leste IQ -/60, Togo IQ 69/60, Tonga IQ 87/84, Trinidad and Tobago IQ 80/91, Tunisia IQ 84/83 (79/77), Turkey IQ 90/86 (88/86), Turkmenistan IQ 87/79, Uganda IQ 73/69, Ukraine IQ 96/90, United Arab Emirates IQ 83/76, United Kingdom IQ 100/100 (in 2000 IQ 104, no representative sampling in 2003/in 2006 IQ 97)) immigrants of the second generation (93), England (-/97), Northern Ireland (102/97) Scotland (104/99) Wales (100/95), United States of America IQ 98/98 (97/94) immigrants of the second generation (88) IQ averages in US States (in the following the arithmetic means of these estimates from SAT and ACT scores by Van Sloan and the NAEP derived scores published by M. A. McDaniel: Intelligence 34 (2006) p. 612, corrected by minus 3 to an average of IQ 97: Alabama IQ 94, Alaska IQ 97, Arizona IQ 96, Arkansas IQ 95, California IQ 95, Colorado IQ 99, Connecticut IQ 100, Delaware IQ 97, Florida IQ 95, Georgia IQ 95, Hawaii IQ 95, Idaho IQ 98, Illinois IQ 98, Indiana IQ 98, Iowa IQ 100, Kansas IQ 100, Kentucky IQ 95, Louisiana IQ 93, Maine IQ 99, Maryland IQ 98, Massachusetts IQ 101, Michigan IQ 98, Minnesota IQ 100, Mississippi IQ 91, Missouri IQ 98, Montana IQ 100, Nebraska IQ 99, Nevada IQ 96, New Hampshire IQ 101, New Jersey IQ 99, New Mexico IQ 93, New York IQ 98, North Carolina IQ 96, North Dacota IQ 100, Ohio IQ 99, Oklahoma IQ 98, Oregon IQ 99. Pennsylvania IQ 98, Rhode Island IQ 97, South Carolina IQ 93, South Dacota IQ 99, Tennessee IQ 95, Texas IQ 96, Utah IQ 98, Vermont IQ 100, Virginia IQ 98, Washington IQ 99, West Virginia IQ 97, Wisconsin IQ 100, Wyoming IQ 99), Uruguay IQ 96/90 (87/87), Uzbekistan IQ 87/79, Vanuatu IQ 84/76, Venezuela IQ 89/83, Vietnam IQ 96/93, Yemen IQ 83/73, Zambia IQ 77/67, Zimbabwe IQ 66/71

    Compare: Rindermann, Heiner: The g-factor of international cognitive ability comparisons: the homogeneity of results in PISA, TIMSS, PIRLS and IQ-tests across nations. European Journal of Personality 21 (2007) 667-706.

    As shown by Rindermann, combining the scores of the mathematics, readings and science subtest of PISA makes no essential difference against using the mathematical subtest alone, because all subtests of PISA are heavily loaded with general cognitive ability. Transformed in such a way, relative to the mean of the means of UK, Netherlands and New Zealand,. including the reading and science scale into a compound makes no substantial difference. For example, in 2006 the mean of Germany on the reading scale is IQ 98, on the science scale IQ 99, on the mathematical scale IQ 98. Essentially, all three scales of PISA measure general intelligence.

    As I came to this insight in 2002, I submitted a paper to the relevant journals of the German Society of Psychology. The paper was not only rejected, but in such a dubious and offending way that, for the first time in such a case, I protested to the Executive Board of this Society. Of course in vain, and I left the Society with contempt at the end of 2002.

    As it seems, there were only three psychologists all over Germany who did not believe that my paper and claims were the product of an incorrigible crank. One of the three was Heiner Rindermann. In the following years he extended the basic idea. The data and quality of his extraordinary publications are a great satifisfaction for me.
    A comparing glance over the Lynn and Vanhanen, Rindermann und transformed PISA data shows a downward trend of IQ in many industrial countries, including France, Italy, Germany and the UK. Of course, in the comments of the officals of education and social policy such trends do not exist.

    Programme for International Student Assessment (PISA) scores are the test results of representative samples of 15-years olds. Because the IQ scores estimated by Lynn and Vanhanen have the IQ 100 of the United Kingdom as "Greenwich-IQ", the IQ transformed from PISA in 2003 could be up to three points too high. Moreover, from 2000 to 2003 all original PISA means show an increase of 3 PISA points because Turkey was included in 2003 in order to calculate the OECD mean, but not in 2000.

    God keep alive the simplemindedness of the ministries of education and the officials of PISA all over the world! In 2006, for the first time, they have provided us with representative IQ data of Romania and Kyrgyzystan, and we should be happy about this. If they would understand what they measure, this would mean the end of the PISA studies, I am afraid.

    In many countries the trend is clearly downwards. Comparing the second book by Lynn and Vanhanen: IQ and Global Inequality. Augusta, GA 2006, with the data sets by Rindermann (2007), we find 41 countries with IQ data sets with both mean birth years of subjects before and after 1960. Mean birth year of the subjects of the studies before 1960 was 1949, mean IQ 94. According to Rindermann (2007) the following generation in these 41 countries has a mean IQ of 92. - There remain some open questions of possible bias: For example, to what extent are the children of gypsies, many of them attending special schools, included in the sample of the Czech Republic? In most countries, the growing numbers of children attending special schools for the disabled and very low IQ subjects are not included into the PISA samples.

    Smart fraction theory of IQ. Dear "La Griffe du Lion",
    I became aware of your smart fraction theory of "IQ and the Wealth of Nations". This is exciting! From a different body of empirical data Arthur Jensen and I came to the conclusion (see Major genes of general intelligence )
    that in social reality a threshold exists about IQ 105. From the major gene theory of IQ follows that the frequency m2 of the dull allele M2 is the square root of (1 - f), where f is your "smart fraction". The frequency of the bright allele m1 = (1 - m2). The smart fraction f follows from the Hardy-Weinberg-Law m1 power 2 + 2 m1 m2 + m2 power 2, where f = m1 power 2 + 2 m1m2.
    From your "Table of IQs, smart fractions and GDP" the national frequencies for M1 and M can easily be calculated. For the Congo the frequency of M1 is near zero, for Singapare near 0,20, which is my estimate for highly developed Eurasian populations. The power of a nation does not depend of its mere number, but of the number of its cognitive elite. This is the lesson learned from your data and a fact which I have never doubted.

    Mein neues Buch: Das Tausendjährige Reich Artam - Die alternative Geschichte der Deutschen 1941 - 2099.

    Bevölkerungsqualität: Der demographische Übergang in den Untergang (November 2006)

    Migranten und Bildung: Die PISA-Tests als gigantische IQ-Testreihe

    Zur politischen Wertung der PISA-Studie: Bevölkerung hat nicht nur eine Quantität, sondern auch eine Qualität.

    Detlef H. Rost: Klare Worte zur Hochbegabungs-Diskussion

    Wanted more race realism, less moralistic fallacy

    Cognitive decline as the result of third world immigration.

    The Barbarians at the Gates of Paris

    Enoch Powell: Rivers of Blood

    Race riots

    The Downfall of the Netherlands

    Jean Raspail: The Fatherland Betrayed by The Republic

    Intelligence, Human Capital, and Economic Growth.

    Natural History of Ashkenazi Intelligence.


  • Weiss, Volkmar: The advent of a molecular genetics of general intelligence. Intelligence 20 (1995) 115-124 (Editorial).

  • (Americal Journal of Human Genetics 77 (2005) 118-126) A Genomwide Scan for Intelligence Trait Loci.

  • The golden mean as clock cycle of brain waves.

  • Formulas converting SAT to IQ scores.

  • The geniocracy project.

  • Die IQ der Genies aller Zeiten - IQ of outstanding historical persons

  • Towers, Grady M.: The Empty Promise

  • Triple Nine Society

  • Other High-IQ Societies

  • Uncommonly Difficult IQ Tests

  • A collection of articles on Intelligence and IQ

  • Dean K. Simonton, links to Genius; Giftedness and Talent; Intelligence; Savants; Geniuses, Creators, and Leaders

    Hochbegabtenuntersuchungen aus aller Welt

    330 Rezensionen von Volkmar Weiss bei amazon.de

  • Deutschland hat kein Ausländerproblem, sondern ein Türkenproblem

  • for the mean IQ of Jews see also Die Juden

  • Charles Spearman: "General intelligence," objectively determined and measured.

  • General intelligence by Chris Brand