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Question

What insight does the three-state model provide regarding Fitts' law constants?

a.

Fitts' law constants depend only on the pointing device used

b.

Fitts' law constants depend only on the skill of the user

c.

Fitts' law constants depend on the device state and the pointing device used

d.

Fitts' law constants are unrelated to the device state or user skill

Answer: (c).Fitts' law constants depend on the device state and the pointing device used Explanation:The three-state model suggests that Fitts' law constants depend not only on the pointing device used and user skill but also on the device state.

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Q. What insight does the three-state model provide regarding Fitts' law constants?

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