Read the following paragraph from the section "Play Time Had A Small But Real Effect." "The fact that it's the electronic data collected from the device is very good, it's very objective," said Paul Croarkin, a psychiatrist at the Mayo Clinic in Minnesota. A psychiatrist is a doctor who studies illnesses of the mind. Croarkin has studied video gaming and children. He said he had "lingering questions" about the study and said the self-reporting nature of the survey was a weakness, but added that the researchers presented their findings in a balanced way.

Which selection from the article BEST supports the idea that electronic data is more reliable than survey data?