Top 1% in Field

The top 1% of reviewers in each of the 22 Essential Science Indicators (ESI) research fields. Rankings are calculated by number of verified pre-publication reviews performed and added to Publons between 1 September 2018 and 1 September 2019. Reviews were attributed to an ESI field based on the journal the review was performed for. We added a 22nd field, "Cross-field" to celebrate reviewers whose contributions were for the small amount of journals on Publons that could not be directly matched to an ESI field.

We used the ESI field categorisation because these are broad research areas that align with the Web of Science -- the most trusted citation index for scientific and scholarly research.