I am reading a submission without dialog. And yet, the review asks me to rate the dialog. It would be nice to have an "N/A" selection, and adjust the review to average only those categories not set to N/A.
N/A would be helpful. When there's no dialogue, I usually just dedicate that category to rating the narrative voice and then explain that in my comment.
Hmm. Good point. I'll bring it up. In the meantime, bethwenn's suggestion is a great one. I've also rated the dialog as the average of the other categories (in other words, if the average score before rating dialog is 3, then I give it a 3) and explain I did so in order to leave the total average of the story the same but still put in a rating.
I wondered about this, too. I've been puzzling over how to rate submissions in 1st person POV, or non-fiction essays that often contain litttle or no dialogue. I like bethwenn's suggestion to rate the narrative voice overall in those cases.