Click here to buy from Amazon. Paul M. Fitts (1912–1965) was a psychologist at both Ohio State University and the University of Michigan. 1n 1954, he created a mathematical formula to determine the relationship for how long it takes a user to either select an object on the screen or physically touching it, based on its target size and distance from the selector’s starting point.

Fitts’s Law is widely used today by UX designers, human factors specialists, and engineers when designing graphical user interfaces and comparing performance of various input devices. Fitts’s Law finds that:

In mobile devices, we know that screen display size is limited and its space is valuable. In addition, mobile users require quick access to the content they are looking for. Using Fitts’s Law together with these constraints can improve the user experience:

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Fitts' Law (last edited 2013-04-08 20:02:46 by shoobe01)