Should psychologists be able to test people without their knowledge for psychological research?

Thesis statement: While testing people without their knowledge can lead to major psychological discoveries, psychologists should not be able to test people without their knowledge for research because it is unethical, can cause psychological trauma to the participant, and is extremely unprofessional of the researcher.
Paper will be turned into Turnitin.com.
I have attached the rubric.
Needs to be in MLA format with at least 6 sources from research databases.