Yesterday I wrote about reviewer statistics for a particular journal. Another part of this journal dataset shows the number of manuscript submissions/month over the past 5 years. Submissions are very constant for 9 of the months, but there is a trough in July and a big spike in March (trailing off only slightly in April).
The summer dip in submissions is not surprising, but if you'd asked me to guess which month would have the trough, I probably would have guessed August. Instead, August has the same number of submissions as September (and October and November etc.), but July is dramatically lower.
And then there's the March spike. Perhaps these are manuscripts that are worked on over the winter holidays but are not quite finished when the new term starts and then completed by March?
2 months ago