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I've studied this a little bit within the context of timing responses to personality test items. General models of reading speed look at both the time to read the words as well as to comprehend. From memory, eye tracking studies have shown how the eyes will often back track to confusing parts of a sentence (apologies for lack of reference). Some general ...

Presumably the decision of drivers to slow down in response to work zone signage is influenced by many factors. Signage and road factors: Presumably there are a wide range of factors related to the nature of the signs and the structure of the road setting that influence whether people slow down. For example, I've seen road work signage on freeways that ...

If you really wanted to know you could use models of reading behaviour - e.g. EZ-Reader or Swift. The Rayner reviews are the classic go-to to outlne this kind of thing: Rayner, K. (2009). Eye movements and attention in reading, scene perception, and visual search. The Quarterly Journal of Experimental Psychology (2006) (Vol. 62, pp. 1457-506). It will ...

A few thoughts spring to mind: Part of the answer might depend on the maximum value of X (if all the messages are relatively short, that's a key piece of information). It doesn't decay, I don't think. The more information presented to the user, the more it all has to put into context with each other. But I don't think it's quadratic, either; that seems ...

Benefits of touch typing on task performance: I assume that when comparing skilled individuals, two handed touch typing on a traditional keyboard is faster, more reliable, and more automatic, than the other methods of text input that you mention (e.g., phone or tablet keyboards). These advantages are discussed here. Faster input means that ideas can be ...

It may also be due to errors in perception. Our brains did not evolve to perceive/judge objects and distances while traveling at such high speeds and we may misjudge how fast we are actually going to how fast we think is safe. There are some studies out there that ask people how long the white dividing lines on freeways are (people always under estimate ...