Question

1.102 Be Sure to Get Your Beauty Sleep! New research supports the idea that people who get a good night's sleep look more attractive. In the study, 23 subjects agés 18 to 31 were photographed twice, once after a good night's sleep and once after being kept awake for 31 hours. Hair, make-up, clothing and lighting were the same for both photographs. Observers then rated the photographs on a scale of 1 to 10 for attractiveness, and ratings under the two conditions were compared. The researchers report in the British Medical Journal that "Our findings show that sleep-deprived people appear less attractive compared with when they are well rested." YEREEC d. If the randomization youdescribed was done successfully, ca study? we conclude causality from this Does the statement "sleep-deprived people appear less attractive compared with when they well rested" imply causality? Briefly explain your reasoning. are e.

Answer 1

d. Sure. If the described randomization was done successfully, we can conclude causality from this study.

e. Yes. The statement "Sleep deprived people appear less attractive compare with when they are well rested" implies causality. If we don't take sleep for one night also, it leads to swollen ayes, prominent dark circles, dizziness which can be easily seen on our face. It gives us sad face, negative feelings, angry mood. Sleep rests our body which in turn gives well blood flow and makes us fresh for the morning routine. So there is causality between a good sleep and beauty!