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Comment & Response |

Importance of Understanding the Validity and Reliability of Visual Analog Scales for Rating of Personality

Shunjie Chua, BEng1,2; Mark Pitts, PhD3; Peter Lemark, MBA4
[+] Author Affiliations
1Duke NUS Graduate Medical School, Singapore
2Duke University School of Medicine, Durham, North Carolina
3Pritzker School of Medicine, University of Chicago, Chicago, Illinois
4Booth School of Business, University of Chicago, Chicago, Illinois
JAMA Facial Plast Surg. 2015;17(4):311. doi:10.1001/jamafacial.2015.0676.
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To the Editor As clinicians who have consulted and treated many patients with prominent ears, we read with great interest the article by Litschel et al1 because this is one of the few studies that have managed to quantify the attention-drawing potential of protruding ears and to measure the effect of protruding ears on the perception of personality traits.

However, we believe that the authors should have provided a greater explanation of the administration and use of the visual analog scales (VAS) for the rating of personalities in the study. This is because, to our knowledge, the VAS has not been used in any published studies for the purposes of personality rating. The authors1 have also not mentioned any reliability and validity tests for the use of VAS for the purposes as mentioned on the study.


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July 1, 2015
Ralph Litschel, MD; Abel-Jan Tasman, PhD
1Department of Otorhinolaryngology–Head and Neck Surgery, Cantonal Hospital, St Gallen, Switzerland
JAMA Facial Plast Surg. 2015;17(4):311-312. doi:10.1001/jamafacial.2015.0726.
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