If you can obtain access to it anywhere, you might enjoy plowing through this special issue on mental speed:
https://www.mdpi.com/journal/jintelligence/special_issues/mentalspeedEdit: 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.
