Educability-and-Group-Differences-1973-by-Arthur-Robert-Jensen

Table 3.1 Correlations (decimals omitted) among achievement test
scores, and the first principal component (P.C.I), from grade 3 to high
school (all columns, excepting P.C.I, from Vane, 1966).
Grade 3 4 5
Grade
6 7 8 HS P.C.I
3 85 82 81 79 76 66 0-90
4 85 86 83 80 80 65 0*91
5 82 86 89 84 82 69 0-93
6 81 83 89 89 86 70 0-94
7 79 80 84 89 90 71 0-94
8 76 80 82 86 90 72 0-92
HS 66 65 69 70 71 72 0-80
Table 3.2 Correlations (decimals omitted) among achievement test
scores, and the first principal component (P.C.I), from grade 2 to
grade 9 (from Bracht & Hopkins, 1972).
Grade
Grade 2 3 4 5 6 7 8 9 P.C.I
2 73 74 72 68 68 66 60 0-80
3 73 86 79 78 76 74 61 0-86
4 74 86 87 86 84 81 70 0-92
5 72 79 87 93 91 87 77 0-95
6 68 78 86 93 93 90 81 0-96
7 68 76 84 91 93 94 85 0-96
8 66 74 81 87 90 94 86 0-94
9 60 61 70 77 81 85 86 0-86