IQ vs Religiosity

IQ and Religion

The graph shown above relates the arithmetic mean IQ measured in various country's populations, to the fraction of each country's population that believes religion is very important.

The green diamonds represent individual countries; the yellow line is a linear regression (y = mx + b), calculated by the least squares method. The United States data point is circled in red. TK Solver was used to create the graph from the data listed in the table below:

 

Country

Percent who say religion is very important
(Pew survey)

IQ
(from Lynn & Vanhanen)

Angola

80

69

Argentina 39 96
Bangladesh 88 81
Bolivia 66 85
Brazil 77 87
Bulgaria 13 93
Canada 30 97
Czech Republic 11 97
France 11 98
Germany 21 102
Ghana 84 71
Great Britain 33 100
Guatemala 80 79
Honduras 72 84
India 92 81
Indonesia 95 89
Italy 27 102
Ivory Coast 91 71
Japan 12 105
Kenya 85 72
Mali 90 68
Mexico 57 87
Nigeria 92 67
Pakistan 91 81
Peru 69 90
Philipines 88 86
Poland 36 99
Russia 14 96
Senegal 97 64
Slovakia 29 95
South Africa 87 72
South Korea 25 106
Tanzania 83 72
Turkey 65 90
United States 59 98
Uganda 85 73
Ukraine 35 96
Uzbekistan 35 87
Venezuela 61 88
Vietnam 24 96

   

The data shown above begs the question: what would be revealed by a survey that correlated IQ and religiosity on an individual basis? Within a given population, is religion more important to persons of high intelligence, or low intelligence?

 

 


The religious attitude data is from a poll that was part of the Pew Global Attitudes Project. The survey report is available online at:
    http://pewglobal.org/reports/display.php?ReportID=167

The question wording used in the poll was as follows:

How important is religion in your life—very important, somewhat important, not too important, or not at all important?

The report available online only lists the percentage that said religion was 'very important'. The data from the report is listed below:

Religion Very Important

North America:
U.S. 59 %
Canada 30 %

West Europe:
Great Britain 33 %
Italy 27 %
Germany 21 %
France 11 %

East Europe:
Poland 36 %
Ukraine 35 %
Slovakia 29 %
Russia 14 %
Bulgaria 13 %
Czech 11 %

Conflict Area:
Pakistan 91 %
Turkey 65 %
Uzbekistan 35 %

Latin America:
Guatemala 80 %
Brazil 77 %
Honduras 72 %
Peru 69 %
Bolivia 66 %
Venezuela 61 %
Mexico 57 %
Argentina 39 %

Asia:
Indonesia 95 %
India 92 %
Philipines 88 %
Bangladesh 88 %
Korea 25 %
Vietnam 24 %
Japan 12 %

Africa:
Senegal 97 %
Nigeria 92 %
Ivory Coast 91 %
Mali 90 %
South Africa 87 %
Kenya 85 %
Uganda 85 %
Ghana 84 %
Tanzania 83 %
Angola 80 %


 
The IQ data is from IQ and the Wealth of Nations by Richard Lynn and Tatu Vanhanen.


p. 73-80, Table 6.5: National IQ based on arithmetic means calculated by Lynn and Vanhanen (2002), in parentheses PISA scores of "mathematical competence" (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 500 to IQ 100, PISA 567 to IQ 110):

Afghanistan IQ 83
Albania IQ 90 (78)
Algeria IQ 84
Angola IQ 69
Antigua and Barbuda IQ 75
Argentina IQ 96 (82)
Armenia IQ 93
Australia IQ 98 (104)
Austria IQ 102 (101)
Azerbaijan IQ 87
Bahamas IQ 78
Bahrain IQ 83
Bangladesh IQ 81
Barbados IQ 78
Belarus IQ 96
Belgium IQ 100 (104)
Belize IQ 83
Benin IQ 69
Bhutan IQ 78
Bolivia IQ 85
Botswana IQ 72
Brazil IQ 87 (78)
Brunei IQ 92
Bulgaria IQ 93 (87)
Burkina Faso IQ 67
Burma IQ 86
Burundi IQ 70
Cambodia IQ 89
Cameroon IQ 70
Canada IQ 97 (105)
Cape Verde IQ 78
Central African Republic IQ 68
Chad IQ 72
Chile IQ 93 (81)
China IQ 100
Colombia IQ 89
Comoros IQ 79
Congo (Brazzaville) IQ 73
Congo (Zaire) IQ 65
Costa Rica IQ 91
Croatia IQ 90
Cuba IQ 85
Cyprus IQ 92
Czech Republic IQ 97 (102)
Denmark IQ 98 (102)
Djibouti IQ 68
Dominica IQ 75
Dominican Republic IQ 84
Ecuador IQ 80
Egypt IQ 83
El Salvador IQ 84
Equatorial Guinea IQ 59
Eritrea IQ 68
Estonia IQ 97
Ethiopia IQ 63
Fiji IQ 84
Finland IQ 97 (107)
France IQ 98 (102)
Gabon IQ 66
Gambia IQ 65
Georgia IQ 93
Germany IQ 102 (100)
Ghana IQ 71
Greece IQ 92 (92)
Grenada IQ 75
Guatemala IQ 79
Guinea IQ 66
Guinea-Bissau IQ 66
Guayana IQ 84
Haiti IQ 72
Honduras IQ 84
Hongkong IQ 107 (107)
Hungary IQ 99 (99)
Iceland IQ 98 (102)
India IQ 81
Indonesia IQ 89 (79)
Iran IQ 84
Iraq IQ 87
Ireland IQ 93 (100)
Israel IQ 94 (96)
Italy IQ 102 (95)
Ivory Coast IQ 71
Jamaica 72
Japan IQ 105 (105)
Jordan IQ 87
Kazakhstan IQ 93
Kenya IQ 72
Kiribati IQ 84
Korea (North) IQ 104
Korea (South) IQ 106 (106)
Kuwait IQ 83
Kyrgyzystan IQ 87
Laos IQ 89
Latvia IQ 97 (97)
Lebanon IQ 86
Lesotho IQ 72
Liberia IQ 65
Libya IQ 84
Liechtenstein (105)
Lithuania IQ 97
Luxembourg IQ 101 (99)
Macao (104)
Macedonia IQ 93 (80)
Madagascar IQ 79
Malawi IQ 71
Malaysia IQ 92
Maldives IQ 81
Mali IQ 69
Malta IQ 95
Marshall Islands IQ 84
Mauritania IQ 74
Mauritius IQ 81
Mexico IQ 87 (83)
Micronesia IQ 84
Moldova IQ 95
Mongolia IQ 98
Morocco IQ 85
Mozambique IQ 72
Namibia IQ 72
Nepal IQ 78
Netherlands IQ 102 (106)
New Zealand IQ 100 (103)
Maori (100)
Nicaragua IQ 84
Niger IQ 67
Nigeria IQ 67
Norway IQ 98 (99)
Oman IQ 83
Pakistan IQ 81
Panama IQ 85
Papua New Guinea IQ 84
Paraguay IQ 85
Peru IQ 90 (76)
Philippines IQ 86
Poland IQ 99 (99)
Portugal IQ 95 (95)
Puerto Rico IQ 84
Qatar IQ 78
Romania IQ 94
Russia IQ 96 (95)
Rwanda IQ 70
Samoa (Western) IQ 87
Sao Tome/Principe IQ 59
Saudi Arabia IQ 83
Senegal IQ 65
Serbia IQ 93
Seychelles IQ 81
Sierra Leone IQ 64
Singapore IQ 103
Slovakia IQ 96 (100)
Slovenia IQ 95
Solomon Islands IQ 84
Somalia IQ 84
South Africa IQ 72
Spain IQ 97 (98)
Sri Lanka IQ 81
St. Kitts and Nevis IQ 75
St. Lucia IQ 75
St. Vincent/Grenadines IQ 75
Sudan IQ 72
Suriname IQ 89
Swaziland iQ 72
Sweden IQ 101 (101)
Switzerland IQ 101 (104)
German Swiss (106)
French Swiss (104)
Ticino (102)
Syria IQ 87
Taiwan IQ 104
Tajikistan IQ 87
Tanzania IQ 72
Thailand (87)
Togo IQ 69
Tonga IQ 87
Trinidad and Tobago IQ 80
Tunisia IQ 84 (79)
Turkey IQ 90 (88)
Turkmenistan IQ 87
Uganda IQ 73
Ukraine IQ 96
United Arab Emirates IQ 83
United Kingdom IQ 100
Northern Ireland (102)
Scotland (104)
Wales (100)
United States of America IQ 98 (97)
Uruguay IQ 96 (88)
Uzbekistan IQ 87
Vanuatu IQ 84
Venezuela IQ 89
Vietnam IQ 96
Yemen IQ 83
Zambia IQ 77
Zimbabwe IQ 66

Programme for International Student Assessment (PISA) scores are the test results of representative samples of 15-years olds, tested in 2003. 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 may be about 3 points too high. Moreover, from 2000 to 2003 all 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.

 

p. 44: ”The number of geniuses produced by a population depends on the population’s mean IQ. For a population with a mean IQ of 100, an IQ of 158 is present in approximately one individual out of 30,000. In a population with a mean IQ of 115, there would be approximately one individual per 1,000 people with an IQ over 158, a thirty-fold increase, Thus, differences in the mean IQs of national populations will have large multiplier effects on the numbers of geniuses produced. These effects are likely to contribute both directly and indirectly to economic development.”