Meta-analysis of behavioral genetic studies of Piagetian cognitive ability

	A	B	C	D	E	F	G	H	I	J	K	L	M	N
1
2
3
4
5	Study	Year	Age	Measure	Measure_subtype	Gender	Metric	MZ_r	DZ_r	MZ_n	DZ_n	h2	c2	e2
6	Matheny et al 1974	1973	0.5	Baylay's Mental Scale	50 items	Both	Pearson	0.83	0.55	126	154
7	Matheny et al 1974	1973	1.5	Baylay's Mental Scale	10 items	Both	Pearson	0.66	0.4	126	154
8	Caroline et al 2001	2001	7	Conservation ability task	Computerized	Males	Tetrachoric	0.95	0.44	37	41
9	Caroline et al 2001	2001	7	Conservation ability task	Computerized	Females	Tetrachoric	0.59	0.4	42	34
10	Caroline et al 2001	2001	7	Conservation ability task	Computerized	Cross	Tetrachoric		0.51		38
11	Garfinkle 1982	1982	5.9	Piagetian Mathematical Concepts Battery		Both				137	72	0.49
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100