I was confused about how to use 'in' and 'on' in sentence. For example:
The study was conducted to compare gender differences in/on physical injury.
Which one should I pick up? 'in' or 'on'?
In the case of the prepositions in and on, here are the most usual uses. In
in mainly denotes “rest at”:
PLACE: He lives in the country. He lives in Chicago. (BUT, He lives at 2300 Wabash Ave.)
TIME: I’ll be there in an hour.
MANNER: The child ran down the steps in tears.
REFERENCE: In my opinion we need a referendum. They are happy in their marriage. On
on indicates proximity and position above or outside:
PLACE: He sat on the fence.
TIME: He was not thinking well on that occasion.
REFERENCE: He asked my opinion on the matter.
CONDITION: We’ll hire him on your recommendation.