fitts's law

18 Oct 2012 - 11:54am
3 years ago
4 replies

Clickable paragraphs: thoughts/research?

Take a look at this page

If you hover over the news stories, you'll see that the whole extract of each story (title, image and description) is clickable and links through to the full story. This is nice as it give a large click target, but it also leads to unexpected behavior in that the paragraph text is a link even though it doesn't look like one.

Markup like this is relatively new since, before HTML5, block level elements like paragraphs were not allowed inside link tags.

28 Mar 2010 - 4:54am
6 years ago
2 replies
Jan C. Dittrich

Fitts's law: Speed and Start values for common devices


I am in search for the average start-stop and speed values for common devices like mouse and use of fingertip.

Fitts's Law: MT = a + b log2(2A/W)

the values I am in search for are a and b in the formula. Exlanations of the Law can be find everywhere, but almost all state that a and b are device-dependent and can be determined experimentally. Instead of setting up a valid experiment straight away I would like to ask if somebody already has determined the values for common pointing devices.


Thanks in advance,


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