Propose TWO ways typically used in psychology to test the topic: the effects of marijuana on GPA . Make sure to clearly identify and discuss TWO ways this topic could be tested as well as identify the independent and dependent variables. Finally, after discussing how to test this topic, detail two possible ethical concerns.

After reading sections 2.2, 2.3, and 2.4 in the textbook,
Propose TWO ways typically used in psychology to test the topic: the effects of marijuana on GPA . Make sure to clearly identify and discuss TWO ways this topic could be tested as well as identify the independent and dependent variables. Finally, after discussing how to test this topic, detail two possible ethical concerns.
Please DO Not pull info from the internet to cite. NO citation work must come from the pages I attached, please.
I HAVE ATTACHED THE PGS FROM THE SECTIONS.