[kwertyoowiyop]

In the 80s, when the mouse was just becoming common, there was a study comparing programming using a mouse vs. just a keyboard. Programmers thought they were faster using a keyboard, but they were actually faster using a mouse.

[logicprog]

That's the Ask Tog "study"[1]. It wasn't programmers, just regular users. The problem is he just says it, and of course Apple at the time of the Macintosh's development would have a strong motivation to prove mousing superior to keyboarding to skeptical users. Additionally, the experience level of the users was never specified.

[1]: https://www.asktog.com/TOI/toi06KeyboardVMouse1.html

[harvey9]

This suprises me because at the time user interfaces were optimised for keyboard - the only input device most people had. Also screen resolutions were lower so there were fewer things you could click on anyway.