Some Research Questions Cannot Be Answered Using Human Experiments Because

question 11

Multiple Choice

Some research questions cannot be answered using human experiments because

• A) some studies would be impractical or unethical.
• B) randomization is often hard to achieve.
• C) double-blind studies are usually dangerous to participants.
• D) researchers know that their results usually will not be published.
• E) they are not a very effective way to learn about cause-and-effect relationships.