Card, Moran an Newell use .4 seconds in their keystroke-level model.
(_The Psychology of Human-Computer Interaction_)
Design for Usability
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> -----Original Message-----
> From: ACM SIGCHI WWW Human Factors (Open Discussion)
> [mailto:[log in to unmask]] On Behalf Of Karen Casemier
> Sent: 19 October 2004 20:31
> To: [log in to unmask]
> Subject: Time loss when switching input methods (keyboard to mouse)
> I know I have this info somewhere, but cannot find it. Are
> there studies out there that identify how much time (in
> seconds) is lost when users are forced to switch from the
> keyboard to the mouse (or vice versa)...