All the examples from New Oxford American Dictionary, use "study" as a noun. The question was should we use "study on" when "study" is used as a verb. The verb "study" does not take any preposition to link to the topic being studied. There is a difference between: I studied on this topic (wrong) vs A study on this topic was presented... (good)
“study of” vs. “study on”
All the examples from New Oxford American Dictionary, use "study" as a noun. The question was should we use "study on" when "study" is used as a verb.
The verb "study" does not take any preposition to link to the topic being studied.
There is a difference between:
I studied on this topic (wrong)
vs
A study on this topic was presented... (good)