In logic, arguments aren't described as true, rather, arguments are used to prove the validity of something.
I honestly dont know the answer to this
I believe there is something wrong with the experiments.
First of all, there is no control group which make the researcher able to distinguish which variables are the one that would change the nature of independent variable. The second reason is because there is biased or non representative sample in the study ( only from colleagues in the same field)
