I know you're doing a Masters Degree. That's why I can't understand why your being so dense about something so simple.
To put it more simply. Which do you think is more accurate. A study about healthy eating vs how much TV you watch that compares me and my neighbor.
Or a study about healthy eating vs how much TV you watch that compares me and Joe from Samoa.
Clearly my neighbor and I have many more things in common then I do with Joe from Samoa. Meaning far less confounding variables.
There in my study is far more reliable then yours. As someone going for a masters degree you should be able to recognize this fact assuming your masters degree involves statistics. (don't know what your going for.)
To do otherwise would just be intellectually dishonest.
