When reading for pleasure I don’t read as slowly as when I copyedit, but I am not a fast reader. Often I will read a sentence more than once, then flip back and forth comparing it with other sentences, just like I do when copyediting. I think I’ve always read like a copyeditor, even way back before I knew what a copyeditor was.
Style Sheet: A Conversation with My Copyeditor
Novelist Edan Lepucki interviews her copyeditor, Susan Bradanini Betz, for The Millions: a vivid description of the process and mindset behind copyediting.