Lab Assignment #7: Psychometric Properties of Measures
The purpose of this lab is to get you familiar with how measures are developed and how their psychometric properties are tested. Note: most of the article should be easy to read. However, the sections that describe methods related to the ROC Curve of the SAS-SV” and the results related to the “Diagnostic Ability of the SAS-SV” will be difficult to follow. You can skip these sections and still understand the main objectives of the paper.
1. Read the article by Kwon, Kim, Choo, and Yang (2013) that describes how the SAS – Short Version was developed and answer the following questions:
a. Evaluate the SAS- Short Version’s reliability based on the information presented. Use actual statistics to back up your opinion.

b. Evaluate the SAS-Short Version’s validity based on the information presented. Use actual statistics to back up your opinion.

3. Discuss whether you think the SAS – Short Form would be good to use with UVI students to assess addition to cell phones. Why or why not? Be sure to justify your answer by examining the sample used to originally test the reliability and the validity of the scale SAS – Short Form.
4. Describe how you think we should:

a. Establish the reliability of the instrument we developed in class. Be specific.

b. Test the validity of the measure we developed in class. Be specific.