Read the article by Caroline Angel and her colleagues (2014).
Then use the evaluation questions from Chapter 9 and the knowledge you have gained from the chapter and from Lecture 8 to evaluate each question below on a scale of 1 to 5 or give an N/A (not applicable) or I/I (insufficient information) when applying it to the study described in Angel et al.’s (2014) article. As usual, make sure to explain your rating for each evaluation question in a couple of sentences (approx. 2.5 pages).
____ 1. If two or more groups were compared, were the participants assigned at random to the groups?
Explain:
____ 2. If two or more groups were compared, were there enough participants (or aggregate units) per group?
Explain:
____ 3. If two or more comparison groups were not formed at random, is there evidence that they were initially equal in important ways?
Explain:
____ 4. If only a single participant or a single group is used, have the treatments been alternated?
Explain:
____ 5. Are the treatments described in sufficient detail?
Explain:
____ 6. If the treatments were administered by individuals other than the researcher, were those individuals properly trained and monitored?
Explain:
____ 7. If each treatment group had a different person administering a treatment, did the researcher try to eliminate the personal effect?
Explain:
____ 8. If treatments were self-administered, did the researcher check on treatment compliance?
Explain:
____ 9. Except for differences in the treatments, were all other conditions the same in the experimental and control groups?
Explain:
____ 10. Were the effects or outcomes of treatment evaluated by individuals who were not aware of the group assignment status?
Explain:
____ 11. When appropriate, have the researchers considered possible demand characteristics?
Explain:
____ 12. Is the setting for the experiment natural?
Explain:
____ 13. Has the researcher distinguished between random selection and random assignment?
Explain:
____ 14. Has the researcher considered attrition?
Explain:
____ 15. Has the researcher used ethical and politically acceptable treatments?
Explain:
____ 16. Overall, was the experiment properly conducted?
Explain:
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