According to Leo, Which of the Following Is a Problem

question 184

Multiple Choice

According to Leo, which of the following is a problem with the MTA study of the effects of Ritalin on very young children?

• A) the sample of parents that they used in the research was not a random sample of typical parents in the United States.
• B) the group of parents who were selected for the study was already biased toward the idea that ADHD is a disease that can be treated with medications.
• C) the teachers in this study found that, although medication improved attention among these children, it did not have any effect on hyperactivity.
• D) all of the above