Validation of self-reported smartphone usage against objectively-measured smartphone usage in Hong Kong Chinese adolescents and young adults

Paul H. LEE, Choi Yeung Andy TSE, Cynthia S. T. WU, Yim Wah MAK, Uichin LEE

Research output: Contribution to journalArticlespeer-review

Abstract

Objective   This study evaluated the validity of self-reported smartphone usage data against objectively-measured smartphone usage data by directly tracking the activities in the participants’ smartphone among Chinese adolescents and young adults in Hong Kong.
Methods   A total of 187 participants were recruited (mean age 19.4, 71.7% female) between 2017 and 2018. A smartphone usage tracking app was installed on all participants’ smartphone for 7 consecutive days. After the 7-day monitoring period, they completed a self-administered questionnaire on smartphone usage habits.
Results   Although the correlation between self-reported and objectively-measured total smartphone usage time was insignificant (ρ=0.10, p=0.18), in three out of the four usage domains were positively and significantly correlated, namely social network (ρ=0.21, p=0.005), instant messaging (ρ=0.27, p<0.001), and games (ρ=0.64, p<0.001). Participants’ self-report of the total time spent on smartphones exceeded the objective data by around 760 min per week (self-reported 1,930.3 min/wk vs. objectively-measured 1,170.7 min/wk, p<0.001). Most of the over-reporting was contributed by the web browsing domain (self-reported 447.8 min/wk vs. objectively-measured 33.3 min/wk, p<0.001).
Conclusion   Our results showed large discrepancies between self-reported smartphone and objectively-measured smartphone usage except for self-reported usage on game apps. Copyright © 2021 Korean Neuropsychiatric Association 95.
Original languageEnglish
Pages (from-to)95-100
JournalPsychiatry Investigation
Volume18
Issue number2
Early online date02 Feb 2021
DOIs
Publication statusPublished - Feb 2021

Citation

Lee, P. H., Tse, A. C. Y., Wu, C. S. T., Mak, Y. W., & Lee, U. (2021). Validation of self-reported smartphone usage against objectively-measured smartphone usage in Hong Kong Chinese adolescents and young adults. Psychiatry Investigation, 18(2), 95-100. doi: 10.30773/pi.2020.0197

Keywords

  • Chinese
  • Information technology
  • Mobile phone
  • Smartphone monitoring
  • Valid

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