Instead of using the Yes/No field in review submission form, you should choose the Rating field type for questions with scales viz. rating an abstract based on exclusivity. See the screenshot below.

Reviewers would still see the same questions to answer while reviewing the abstract, except that when you use the Rating field, the system calculates an average rating for the abstract based on each question answered by the reviewer. See screenshot below.

This helps chair determine very easily whether to accept/reject an abstract.