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. 2016 Jan 27;45(12):2387–2405. doi: 10.1007/s10964-016-0419-0

Table 4.

Twin correlations within- and across- age and reporter

Child Parent Cross-reporter
Age 9 12 14 9 12 14 9 12 14
MZ (same sex)
 9 0.64 0.93 0.48
 12 0.39 0.58 0.59 0.91 0.33 0.44
 14 0.37 0.41 0.57 0.57 0.60 0.92 0.34 0.36 0.44
DZ (same sex)
 9 0.54 0.71 0.38
 12 0.35 0.43 0.45 0.74 0.29 0.33
 14 0.26 0.27 0.42 0.38 0.44 0.70 0.25 0.23 0.31
DZ (opposite sex)
 9 0.38 0.65 0.32
 12 0.23 0.40 0.45 0.72 0.29 0.34
 14 0.20 0.28 0.32 0.40 0.46 0.66 0.24 0.25 0.28