Question

21. True or False? In the article: Horne Thompson, A. & Grocke, D. (2008). The effect of music therapy on anxiety in patients who are terminally ill, Journal of Palliative Medicine, 11(4), 582-590, the authors used a formal conceptual model. a True b. False Chapter 9 22. Which of the following provides the best example of meeting criteria to determine causality? a Intestinal distress occurs after subjects diagnosed with Celiac disease ingest gluten. b. Intuition that computer screen time impairs vision. c. Prospective study showing high correlation between stress and anxiety. d. Increased sodium intake predicted to lower blood pressure. 23. Which of the following is most likely to be an example of a "true experiment"? a. "The effects of sunlight exposure on Vitamin D levels in preschool children: A retrospective study." b. "The impact of melatonin on sleep regulation in blind adults: A randomized, placebo-controlled study." C. "National survey of children's second-hand smoke exposure in households of smoking adults." d. "Comparison of hospitals with Magnet status versus those without on nursing turnover." 24. Researchers wonder whether providing healthier food choices in a middle school cafeteria and vending machines would reduce total caloric intake and percent of sugar and salt students consume. They compare students' baseline daily calorie, salt and sugar intake before and after introducing healthier food and beverage choices. Why is this considered a quasi-experimental rather than an experimental study? a. There is no intervention. b. There is no random assignment c. It is prospective. d. It's only done in one school. 25. Which type of trial offers the strongest evidence of whether a cause (an intervention) results in an effect (a desired outcome): a. a correlation trial.

Answer 1

21.) Ans : True

22.) Ans : (c) Prospective study showing high correlation between stress and anxiety

23.) Ans : "the impact of melatonin on sleep regulation in blind adults-a randomized placebo controlled study"

24.) Ans : (b) there is no random assignment