What is "The subject of the study and the object of the study"?
Just the greatest answer:
The object of the study is something that is directly exposed to the study, for example, the object of the study will be a member if you measure it with a line. And the subject of the study is the formulation of what you are trying to study, for example: "Variability of the Murge penis length ratio when watching heterosexual and homopornographic movies."