Manual Dexterity is not linked to intelligence, but reaction and processing time is. 

PET scans of people involved in abstract reasoning tasks show that the brains of high function folks use less energy, find a solution with less "work" than people who do poorly. Optimal brain processing works hand in hand with getting to the result faster. Tying involves converting text, spoken language, or thought to hand and finger movement.

The other highest IQ person in my class got higher rates than me because she was willing to make mistakes and correct them manually with ribbon or whiteout, a common practice back in the 1960s. 

I got a slower rate because I preferred accuracy over speed. I would rather get it right the first time than go back and fix it. Ah, the joys of ancient one off hard copy technology.