The biggest source of teenagers’ sexual knowledge comes from

Beginning in middle childhood, obesity is a risk factor for ____

a variety of emotional and behavioral problems low test scores ADHD, primarily hyperactivity-impulsivity type schizophrenia

A colleague informs you that the data you collected in an Internet-based experiment may not

be internally valid. Which strategy would most likely alter this opinion? A) If you could demonstrate that the study participants were demographically similar to people in the community. B) If you could demonstrate the same findings in a smaller, laboratory-based study. C) If you could demonstrate that most people took the same amount of time completing the task over the Internet. D) If you told your colleague that you offered heavy financial compensation for study participation.