Southeast Asians

Southeast Asians are natives of Thailand, Cambodia, Vietnam, Malaysia, Indonesia, the Philippines and Borneo. Their distinctive racial identity has been confirmed by the genetic analysis made by Cavalli-Sforza, Menozzi, and Piazza (1994) in which these peoples constitute a genetic « cluster. » They have some genetic affinity with the East Asians with whom they are to some degree interbred, but the flattened nose and epicanthic eye-fold are less prominent.

1. I.Q of Indigenous Southeast Asians

2. I.Q of Southeast Asians in Holland and the United States

3. Brain Size Differences Between Southeast Asians and Europeans


1. I.Q of Southeast Asians in Southeast Asia.

The median I.Q of Southeast Asians is 87. The average I.Q in Vietnam is higher at 97. The reason is that Vietnamese are hybrids between Southeast Asians and East Asians (Cavalli-Sforza et al., 1994, p.234), which gives a people with an average I.Q intermediate between the two original races.

Table 7.1. IQs of Southeast Asians

Row Country Age N Test IQ Ver Vis Reference
1 Burma 6-13 93 DAM 107 107 Schuster, 1971
2 Cambodia 3-5 4,015 PPVT 65 65 Naudeau et al., 2011
3 Indonesia 5-12 1,149 DAM 86 86 Thomas & Shah, 1961
4 Indonesia 5-Adult 520 CPM 87 Bleichrodt et al., 1980
5 Indonesia 4 139 PPVT 87 87 Soewondo et al., 1989
6 Indonesia 6-8 483 CPM 87 Hadidjaja et al., 1998
7 Indonesia 7-Adult 50 SPM 79 Rindermann & te Nijenhuis, 2012
8 Indonesia EDUC 86 Meisenberg & Lynn, 2011
9 Laos 5-12 22 K-ABC 90 Boivin et al., 1996
10 Laos Adults 22 Matrix Analogies Test 91 Boivin et al., 1996
11 Malaysia 7-12 3,151 SPM 89 Chaim, 1994
12 Malaysia 20 175 EFT 85 85 Kuhnen et al., 2001
13 Malaysia 8-15 EDUC 97 Meisenberg & Lynn, 2011
14 Philippines 12-13 203 SPM 86 Flores & Evans, 1972
15 Philippines 8-15 EDUC 82 Meisenberg & Lynn, 2011
16 Philippines 12 NNAT 94 Vista & Care, 2011
17 Singapore 12 190 SPM 93 Lynn, 1977b
18 Thailand 7-12 1,385 CPM 82 Malakul, 1957
19 Thailand 7-12 892 DAM 98 98 Talapat & Suwannalert, 1966a
20 Thailand 7-14 1,438 CPM 82 Talapat & Suwannalert, 1966b
21 Thailand 7-11 70 WISC 88 Rajatasilpin et al., 1970
22 Thailand Adults 1,462 CPM 72 Chou & Lau, 1987
23 Thailand 6-11 104 Piagetian 87 Opper, 1977
24 Thailand 9-11 1,358 CPM 91 Pollitt et al., 1989
25 Thailand 6-13 3,846 TONI 90 Thai Institute of Public Health, 1998
26 Thailand Adults 400 SPM 90 Phatthrayuttawat et al., 2000
27 Thailand 10 427 TONI 75 Sungthong et al., 2002
28 Thailand 5-11 900 CPM 106 Phatthrayuttawat et al., 2003
29 Thailand 7-12 396 CPM/DAM 98 97 Sangtongluan, 2004
30 Thailand 6-12, 13-18 6,285 TONI 85 Ruangdaraganon, 2004
31 Thailand 12-18 5,702 APM 105 Sukhatunga et al., 2006a
32 Thailand 6-11 3,848 CPM 96 Sukhatunga et al., 2006b
33 Thailand 6-16 3,300 WISC-III 95 Wanitrommani et al., 2004
34 Thailand 13-15 319 TONI 88 Isaranurug et al., 2006
35 Thailand 7-9 100 CPM 87 Nimmalangkun, 2006
36 Thailand 7-11 390 CPM 94 Sroythong, 2008
37 Thailand 7-12 748 CPM 94 Thavornsuwanchai, 2008
38 Thailand 9 560 CPM/WISC-III 81 91 87 Pongcharoen et al., 2011
39 Thailand 6-14 5,993 TONI 88 Aekplakorn, 2009
40 Thailand 6-15 72,780 SPM 97 Thai Department of Mental Health, 2011
41 Thailand EDUC 91 Malloy, 2014d
42 Vietnam 8-12 47 DAM 99 99 Mayer, 1966
43 Vietnam 8 311 CPM 82 Watanabe et al., 2005
44 Vietnam 8 1,000 PPVT 95 95 Glewwe et al., 2012
45 Vietnam 5 1,747 PPVT 82 82 Glewwe et al., 2012
46 Vietnam 5 1,602 PPVT 85 85 Behrman et al., 2013
47 Vietnam 12 976 PPVT 102 102 Fink & Rockers, 2014
48 Vietnam 8 469 CPM/WISC-III 83 Nga et al., 2011
49 Vietnam 11 60 CogAT 97 Rindermann et al., 2013
50 Vietnam EDUC 94 Meisenberg & Lynn, 2011
51 Vietnam EDUC 102 OECD, 2013

2. I.Q of Southeast Asians in Holland and the United States

The median I.Q is 93, which is slightly higher than the value of 87 found in Southeast Asians in their home countries. The main reasons are probably a better diet and a migratory selection.

Table 7.2. IQs of Southeast Asians in the United States and the Netherlands

Ethnicity Age

N

Test

g

Reference

1

Filipino 6-14

140

PM

96

Porteus, 1937

2

Filipino 10-14

305

NV

89

Smith, 1942

3

Filipino 10

138

PMA

91

Werner et al., 1968

4

Filipino 16

4,147

STAS

93

Brandon et al., 1987

5

Filipino 9-25

263

Varions

87

Flynn, 1991

6

Indonesian 6-10

84

NV

94

Tesser et al., 1999

7

Vietnamese 12-16

391

SPM

94

Flynn, 1991



3. Brain Size Differences between Southeast Asians and Europeans

Table 7.3. Brain site (cc) differences of Europeans and Southeast Asians

Europeans

Southeast Asians

Difference

Reference

Mean (Sd)

Mean (Sd)

1

1,426 1,393

33

Gould, 1981

2

1,369 (35) 1,332 (49)

37

Smith & Beals, 1990

3

1,319 1,217

102

Jurgens et al., 1990

Children from Cambodia (Southeast Asians)

 

References for the whole page « Race differences in intelligence. An evolutionary Analysis », Chapter 7, Richard Lynn, Washington Summit Publisher, 1st edition 2006 et 2nd edition 2015.