Lessens the burden on working memory. This means that you don’t have to actively concentrate on the act of writing itself, and that you can instead focus on thinking about what to write.
Between the mental generation of output and the consequent production of text relating to that output. This means that you can write your thoughts down immediately as you are forming them, without suffering from a delay which hinders your thought process.
Improved performance in various academic tasks, and especially those that require a lot of handwriting under time constraints, such as taking notes during lectures or writing essays during in-class exams.