Verify & improve the research
Interpretation of results
Reasoning
Presentation
Critical but constructive feedback
New / additional ideas
Peer review is both co-operative and competitive and serves 2 primary
functions:
To act as a filter by ensuring only good research is published by
determining the validity, significance and originality of the work
To improve the quality of the submitted work, suggesting constructive
improvements
Peer review checks the likelihood of reproducibility, it does not
recreate the experiments to verify reproducibility.