| Infant vs. Uninformed Adult | Uninformed Adult vs. Informed Adult | |||||
t-value (df = 14) | p-value | Cohen’s d | t-value (df = 14) | p-value | Cohen’s d | ||
Demonstration duration (s) | 4.73 | * | 0.69 | 0.55 | n.s. | 0.03 | |
Reach-to-grasp phase |
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| Phase duration (s) | 0.48 | n.s. | 0.16 | 0.92 | n.s. | 0.16 |
| Mean wrist velocity (mm/s) | −1.49 | n.s. | 0.26 | 1.48 | n.s. | 0.23 |
| Wrist trajectory (mm) | −0.43 | n.s. | 0.09 | 1.65 | n.s. | 0.32 |
| Peak height of wrist (mm) | −0.31 | n.s. | 0.07 | 1.57 | n.s. | 0.33 |
| Peak grip aperture (mm) | 2.39 | * | 0.39 | −2.31 | n.s. | 0.23 |
Lift-to-place phase |
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| Phase duration (s) | 3.82 | * | 0.60 | 0.37 | n.s. | 0.04 |
| Mean wrist velocity (mm/s) | −3.74 | * | 0.36 | 0.06 | n.s. | 0.01 |
| Wrist trajectory (mm) | 2.43 | * | 0.46 | 1.04 | n.s. | 0.09 |
| Peak height of wrist (mm) | 4.17 | * | 0.50 | 2.46 | n.s. | 0.31 |