Please use the following link to view the journal article in order to answer the following question:

https://doi.org/10.1556/2006.4.2015.010

(PLEASE MAKE SURE YOU VIEWING THE CORRECT ARTICLE BEFORE ANSWERING CALLED:

Relationship of smartphone use severity with sleep quality, depression, and anxiety in university students BY KAD?R DEM?RC?*, MEHMET AKGNL and ABDULLAH AKPINAR)

Question:

How was the variable Smartphone Addiction operationally defined in this study? O A self-report question where participants identify whether they are in the 1) non smartphone user group, 2) low smartphone user group or 3) high smartphone user group O An observational score with researcher counting how many times participants look at their phone in a 10-minute timespan O A secondary data score with researchers obtaining "Phone Use Time" from smartphone software O A 33-item self-report score on the Smartphone Addiction Scale (SAS)