MZ

DZ

Finger dexterity (s)

Twin 1

45.35 ± 5.91

46.47 ± 11.03

Twin 2

46.26 ± 6.30

46.73 ± 6.09

ICC

0.78

0.77

Hand-eye coordination (s)

Twin 1

18.45 ± 6.34

17.30 ± 5.87

Twin 2

18.89 ± 6.75

15.86 ± 6.41

ICC

0.88

0.75

Manual force control (absolute error)

Twin 1

2.68 ± 2.13

2.64 ± 2.45

Twin 2

2.31 ± 1.96

2.97 ± 1.65

ICC

0.59

0.49

Rate control (absolute error)

Twin 1

45.36 ± 15.95

73.14 ± 31.52

Twin 2

64.69 ± 32.88

90.88 ± 51.24

ICC

0.44

0.18

Simple reaction time (ms)

Twin 1

346.15 ± 37.96

345.52 ± 60.03

Twin 2

365.46 ± 63.83

373.91 ± 43.48

ICC

0.29

0.19