If you can obtain access to it anywhere, you might enjoy plowing through this special issue on mental speed:

Edit: actually, it appears you can download the whole issue, as it is open-access. Though I'm not sure if this is a totally legit journal, as there are articles arguing that the publisher has other not-legit journals, as well as those arguing that they have journals with recognition from respected organizations. So read with caution, I guess.

Edited by aeh (11/05/18 08:22 PM)