1. Thompson WE, Thompson ML. Smartphones: addiction, or way of life? Journal of Ideology 2017;38:Article 3
4. Bae SM, Koh YS. A exploratory study for Influential factors of smartphone over-dependence in elder and older group. J Digit Converg 2017;15:111–121.
7. Gezgin DM. Understanding patterns for smartphone addiction: age, sleep duration, social network use and fear of missing out. Cypriot J Educ Sci 2018;13:166–177.
8. Jeong YW, Oh J. Pattern of smartphone usage and psychosocial factors affecting smartphone overdependence in middle-aged women. J Addict Nurs 2020;31:39–46.
10. Blumer JG, Katz E. The uses of mass communications: current perspectives on gratifications research. Beverly Hills: Sage Publications; 1974.
11. Rubin AM. Uses-and-gratifications perspective on media effects (2nd ed). In: Bryant J, Zillmann D, editor. Media effects: advances in theory and research. Mahwah, NJ: Lawrence Erlbaum Associates, 2002, p. 525–548.
12. Bae SM. The relationship between smartphone use for communication, social capital, and subjective well-being in Korean adolescents: verification using multiple latent growth modeling. Child Youth Serv Rev 2019;96:93–99.
13. Bian M, Leung L. Linking loneliness, shyness, smartphone addiction symptoms, and patterns of smartphone use to social capital. Soc Sci Comput Rev 2015;33:61–79.
14. Kang S, Jung J. Mobile communication for human needs: a comparison of smartphone use between the US and Korea. Comput Hum Behav 2014;35:376–387.
15. Kim YJ. Analysis of problemic smartphone use and life satisfaction by smartphone usage type. J Korea Game Soc 2020;20:23–32.
16. Wang JL, Wang HZ, Gaskin J, Wang LH. The role of stress and motivation in problematic smartphone use among college students. Comput Hum Behav 2015;53:181–188.
17. Jang HJ. Effect of smartphone overall usage, usage by use type and psychosocial characteristics of smartphone interdependence in the elderly [Master’s Thesis] Ulsan, University of Ulsan. 2020.
18. Park N, Kim YC, Shon HY, Shim H. Factors influencing smartphone use and dependency in South Korea. Comput Hum Behav 2013;29:1763–1770.
19. Lee YJ, Park JH. The effect of use motives, self-control and social withdrawal on smartphone addiction. J Digit Converg 2014;12:459–465.
20. Oh YS, Choi EY, Kim YS. Predictors of smartphone uses for health information seeking in the Korean elderly. Soc Work Public Health 2018;33:43–54.
21. Chen C, Zhang KZ, Gong X, Zhao SJ, Lee MK, Liang L. Examining the effects of motives and gender differences on smartphone addiction. Comput Hum Behav 2017;75:891–902.
22. Simsek E, Sali JB. The role of internet addiction and social media membership on university students’ psychological capital. Contemp Educ Technol 2014;5:239–256.
23. Khang H, Kim JK, Kim Y. Self-traits and motivations as antecedents of digital media flow and addiction: the internet, mobile phones, and video games. Comput Hum Behav 2013;29:2416–2424.
24. Schäffer B. The digital literacy of seniors. Res Comp Int Educ 2007;2:29–42.
25. Chen DT, Wu J, Wang YM. Unpacking new media literacy. J Syst Cybern Inf 2011;9:84–88.
26. Lee L, Chen DT, Li JY, Lin TB. Understanding new media literacy: the development of a measuring instrument. Comput Educ 2015;85:84–93.
27. Meyers EM, Erickson I, Small RV. Digital literacy and informal learning environments: an introduction. Learn Media Technol 2013;38:355–367.
29. Helsper EJ, Smahel D. Excessive internet use by young Europeans: psychological vulnerability and digital literacy? Inf Commun Soc 2020;23:1255–1273.
30. Kim HJ, Lee JM. Determinants of Mobile digital information usage among senior consumers: focusing on secondary digital divide. Fam Environ Res 2018;56:489–506.
31. Tsetsi E, Rains SA. Smartphone internet access and use: extending the digital divide and usage gap. Mob Media Commun 2017;5:239–255.
32. Schreurs K, Quan-Haase A, Martin K. Problematizing the digital literacy paradox in the context of older adults’ ICT use: aging, media discourse, and self-determination. Can J Commun 2017;42:1–34.
33. Leung L, Lee PS. Impact of internet literacy, internet addiction symptoms, and internet activities on academic performance. Soc Sci Comput Rev 2012;30:403–418.
34. Chen K, Chan AH. Gerontechnology acceptance by elderly Hong Kong Chinese: a senior technology acceptance model (STAM). Ergonomics 2014;57:635–652.
35. Hong SG, Trimi S, Kim DW. Smartphone use and internet literacy of senior citizens. J Assist Technol 2016;10:27–38.
38. Park JH. Factors related to smartphone dependence among adults in their 20s. Journal of the Korea Academia-Industrial Cooperation Society 2020;21:195–204.
40. Wei R, Lo VH. Staying connected while on the move: cell phone use and social connectedness. New Media Soc 2006;8:53–72.
41. Kim SK, Shin HR, Kim YS. The effect of mobile device capability of middle and older aged adults on life satisfaction: focusing on the mediating effect of mobile social participation. J Digit Converg 2020;18:23–34.