Experimental Psyhology

Hi guys, I would like to ask if you could give me some idea on what topic would be great for experimentation.

Manipulation of Independent variables are needed.
Subjects of the study should be exposed to various treatments.

i.e

Effects of Sleep deprivation in academic performance.
Sleep deprivation would be the IV
Academic performace would be the Dependent Varible.

I hope that you could suggest some.
Cheers!