Biology

Guest

10 January, 13:07

When doing medical research with human subjects, which four limitations are unavoidable?

1 - It's often impossible to repeat trials on the same subjects.

2-Subjects may report an inaccurate medical history.

3-It can be difficult to control all possible variables.

4-It's impossible to come up with testable scientific questions for human subjects.

5-There are ethical or privacy concerns to consider.