What is the correct way to type parentheses?

The correct method for typing parentheses involves placing them directly adjacent to the surrounding text, without any spaces in between. This formatting is standard in professional writing and typing practices, as it maintains clarity and ensures that the information enclosed by the parentheses is closely associated with the text it's intended to accompany. For instance, when you write a sentence, the parenthetical information should seamlessly blend with the rest of the text—like this: "The results were promising (see the next chapter) and encouraging."

Spacing before and after the parentheses, or between them and the enclosed text, can lead to a disjointed appearance that detracts from readability. Therefore, keeping the parentheses snug against the words they are meant to clarify is essential for effective communication.