> Explain why the methods are wrong. Show some evidence. When you sample a non-representative subset, you often get different results from the population at la

> Explain why the methods are wrong. Show some evidence. When you sample a non-representative subset, you often get different results from the population at large. For example, you might get a different answer if you ask the Porsche enthusiasts club what the best car is, compared to if you ask random people in the population. Undergrads are the same way. Asking a group of people, almost half of whom are virgins, questions about romantic relationships . . . well let's just say it might not generalize to the adult population. This is covered in detail in any intro stats course or textbook. You may also be able to Google something like "unrepresentative subset psychology" to get an explainer. I can't do the issue complete justice in a comment here. > So what's wrong with the other study? I'm sorry, I did not sign up for reviewing every study you link me to. I reviewed the one, and explained my perception that it is a good example of the overall quality of the research on this topic. If you want an assessment of the other study, you'll need to look elsewhere.