Is there any evidence that using a command line interface will improve a user's recall memory?
Do users with better predispositions to recall abilities do better with command line interfaces?
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Heavy use of CLI applications can improve recall, and can even develop muscle memories so that folks like UNIX operators can execute commands without thinking about the text they are typing. As a programmer, I experience this, and I many others who do also.
For example, when naviagting folders on a remote server, I think the words "Go Up", but my fingers type
cd .. <Enter>. I might then think "Go up again" and type
<Up> <Enter>. If I wanted to see the status of my source control, I would think "What did I change?" and type
git status, but I wouldn't think the words "git status", I would just recall the keystrokes associated with the action.
Not exactly scholarly evidence, but hope it helps. :)