Assortative mating for IQ: A meta-analysis

	A	B	C	D	E
1	Study	N	r	Year	Gifted?
2	Willoughby (1927, 1928), A	90	0.44	1927	0
3	Willoughby (1927, 1928), A	90	0.44	1928	0
4	Jones (1928), A	105	0.60	1928	0
5	Burks (1928), A	274	0.47	1928	0
6	Colom et al 2002	342	0.492	2002	0
7	Terman and Oden (1959), B	unknown	0.481	1959	1
8	Benbow et al (1983)	35	0.46	1983	1
9	Jensen 1978			1978	0
10	Defries et al 1979			1979	0
11	Loehlin et al (1978)	192		1978	0
12	Bouchard and McGee (1977)	144		1977	0
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17		Total N	Weighted mean
18		901	0.488
19			Median
20			0.475
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