Jaqueline Macdonald

Social Studies

24 December, 14:51

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d. researchers know that their results usually will not be published.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.