How to Think Better – Write!
While writing may not literally increase your working memory, many cognitive scientists now believe that such external representations may form important parts of our cognition. This externalized cognition extends the space of thinking and literally makes us smarter, even if our brains are just the same as before.
Just as writing helps with numerical and mnemonic tasks, it can help you think more clearly about your life problems as well.
First, by jotting down your thoughts on paper, you can hold more ideas than you could in your limited working memory. This means you can more easily work through thoughts that have several parts which are difficult to keep in mind simultaneously.
Second, writing allows editing. If I write down an idea, then later notice a contradiction further down the page, I can go back and edit it. Editing mentally quickly becomes exhausting as, like in the n-back task, the old information interferes with the new.
Third, writing allows for longer thoughts. Have you ever had a conversation where, as you were listening, you forgot the point you were eager to make? Ideas bubble up and pop all the time in our minds, it’s only with writing that you can capture it.