I have one strongly right dominant twin who is hypertonic--> resulting in great gross motor function and athletic skills but poor fine motor control. Easily beats her twin in a running or swimming race but falls way behind her twin at piano or scissor or pen control (although compared to her peers is still normal in these functions)
My other twin is hypotonic and only became truly right dominant at 4 yrs of age--> gross motor slow and tiresome but fine motor well advanced, precision handwriting years above her age, excellent piano fingering. Will never be a gymnastic though
