Development of Measurement Tool of Smartphone-Addicted Indication for Middle-Aged Children

This study is aimed to develop a measurement tool to assess daily behaviour exhibited by children related to their interactions with smartphone. Variable used in this study is the smartphone-addicted indication. The concept of addiction to smartphone is based on several factors, such as daily-life disturbance, positive anticipation, withdrawal, cyberspace-oriented relationship, excessive use, and tolerance. The research subjects involved in this study were seven to thirteen-year-old students. The number of respondents participated in this study consisted of 145 children including 75 boys and 70 girls. The result of the data analysis of 36 items shows the value of reliability trough Cronbach's Alpha is 0.943. The validity test is conducted through qualitative evaluation of 5 items expert judges declaring validity in appearance and content, and supported by discriminant item validity through Corrected Item Total Correlation of all items above 0.3. Thus, the measurement instrument of smartphone-addicted indication can be valid and reliable to be used