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Research Papers
Factors influencing smartphone overdependence in university students: an ecological model: a descriptive study
Jeong Soon Yu, Myung Soon Kwon
J Korean Acad Nurs 2025;55(1):64-80.   Published online February 20, 2025
DOI: https://doi.org/10.4040/jkan.24092
AbstractAbstract PDFePub
Purpose
This study investigated the factors influencing smartphone overdependence in university students using an ecological model and descriptive research.
Methods
Data were collected from 482 students at 13 universities in the six regions in South Korea from October 20, 2020, to March 25, 2021. Data analysis involved descriptive statistics, the chi-square test, the independent samples t-test, analysis of variance, and hierarchical multiple regression.
Results
The significant ecological factors influencing smartphone overdependence included self-awareness of smartphone overdependence (β=.33, p<.001), autonomy (β=–.25, p<.001), average daily smartphone usage time (β=.18, p<.001), gender (β=.15, p=.001), college year (β=.15, p=.020), forming relationships with others as a motivation for smartphone use (β=–.15, p=.008), friend support (β=.14, p=.006), and age (β=–.12, p=.047). The model explained 34.9% of the variance.
Conclusion
The study emphasized the role of personal and interpersonal factors, in smartphone overdependence among university students. Tailored intervention strategies are necessary to address smartphone overdependence, considering the unique characteristics of students’ environments. A significant aspect of this study is that it provides an explanation of the multidimensional factors contributing to smartphone overdependence among university students, including intrapersonal, interpersonal, and environmental influences.
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The Influence of Parental Self-Esteem on Late School-Aged Children’s Media Device Addiction: The Mediating Effect of Marital Conflict and Children’s Self-Esteem
Heo, Dayeon , Kim, Suk-Sun
J Korean Acad Nurs 2022;52(4):421-434.   Published online August 31, 2022
DOI: https://doi.org/10.4040/jkan.22036
AbstractAbstract PDF
Purpose
This study aimed to examine the effect of parental self-esteem on late school-aged children’s media device addiction by mediating marital conflict and children’s self-esteem.
Methods
This study used data from the 11th (2018) Panel Study on Korean Children. The participants consisted of 1,082 family triads (fathers, mothers, and children). Data were collected using the Rosenberg Self-Esteem Scale, Marital Conflict Scale, and K-Internet Addiction Scale. The data were analyzed using structural equation modeling with SPSS/WIN 27.0 and Mplus 8.7.
Results
The final model showed a good fit for the data. Children’s media device addiction was directly related to mothers’ self-esteem, mothers’ marital conflict, and children’s self-esteem. Fathers’ self-esteem had a significant indirect effect on children’s media device addiction by mediating both fathers’ and mothers’ marital conflict. In addition, mothers’ self-esteem had a significant indirect effect on children’s media device addiction by mediating mothers’ marital conflict.
Conclusion
The findings indicates that self-esteem and marital conflict for both fathers and mothers have a significant effect on children’s media device addiction. It suggests that more attention might be given to fathers and mothers in developing interventions to prevent children’s media device addiction.

Citations

Citations to this article as recorded by  
  • A longitudinal study of the relationship between parents’ self-esteem and children’s digital media addiction: Testing the mediating roles of children’s self-esteem and aggression
    Il Bong Mun, Seyoung Lee
    The Social Science Journal.2023; : 1.     CrossRef
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  • 10 Download
  • 1 Crossref
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Review Article
Parental Factors Associated with Smartphone Overuse in Preschoolers: A Systematic Review and Meta-Analysis
Lee, Gumhee , Kim, Sungjae , Yu, Heajin
J Korean Acad Nurs 2020;50(3):349-368.   Published online June 30, 2020
DOI: https://doi.org/10.4040/jkan.19186
AbstractAbstract PDF
Purpose
This study aimed to identify parental factors associated with smartphone overuse in preschoolers.
Methods
A systematic reviewwas conducted according to PRISMA guidelines. Relevant studies published in peer-reviewed journals from 2009 to June 2019 were identifiedthrough systematic search in 10 electronic databases (PubMed, CINAHL, Cochrane Central, EMBASE, Web of Science, NDSL, KISS, KMbase,KoreaMed, and RISS). Standardized effect sizes were calculated to quantify the associations of parental factors with smartphoneoveruse in preschoolers using meta-analysis.
Results
A total of 30 cross-sectional studies involving 7,943 participants met the inclusioncriteria. The following were negatively correlated with smartphone overuse in preschoolers: mother’s parenting self-efficacy (r =-.35),mother-child attachment (r =-.28), mother’s positive parenting behavior (r =-.28), mother’s positive parenting attitude (r =-.25), and father’sparenting involvement (r =-.15). Further, maternal factors such as smartphone addiction tendency (r =.41), parenting stress (r =.40), negativeparenting behavior (r =.35), negative parenting attitude (r =.14), smartphone usage time (r =.26), employment status (r =.18), and age(r =.12) were positively correlated with smartphone overuse in preschoolers.
Conclusion
Several parental factors influence smartphoneoveruse in preschoolers. These findings emphasize the need to assess and enhance the parental factors identified in this study to preventsmartphone overuse in preschoolers. Accordingly, we recommend the development of preventive interventions to strengthen parent-relatedprotective factors and mitigate risk factors.

Citations

Citations to this article as recorded by  
  • FACTORS ASSOCIATED WITH SMARTPHONE OVERDEPENDENCE IN PRESCHOOL CHILDREN AND ITS EFFECT ON SOCIAL BEHAVIORAL PROBLEMS
    Leyla Çakmak, Fikriye Aksoy Boğanak, Nurettin Menteş, Mustafa Volkan
    Sağlık ve Sosyal Refah Araştırmaları Dergisi.2025; 7(1): 43.     CrossRef
  • Empowering Parents: The Impact of a Parenting Practice-Based Care Module on Preventing Internet Gaming Disorder in Elementary School Children
    Nur Hidaayah, Esti Yunitasari, Hanik Endang Nihayati
    Iranian Journal of Nursing and Midwifery Research.2025; 30(2): 211.     CrossRef
  • Effects of digitalization in preschool education on the creative and cognitive development of children
    Yiyi Chen, Zihe Ding
    Education and Information Technologies.2024; 29(16): 21567.     CrossRef
  • Sequential Dual Mediating Effects of Smartphone Dependence and Aggression on the Relationship Between Negative Parenting Attitudes and Depressive Symptoms Among Adolescents
    Jihun Na, Sungkyu Lee, Hyeyeon Sung, Jinho Jhone
    Child & Family Social Work.2024;[Epub]     CrossRef
  • Clinical Manifestations’ Spectrum of Smartphone Addiction: Moving from an Addiction toward a Clinical Syndrome
    Mudar Alwazzeh, Muhdammad Harfouch, Manal Ahmed Hasan, Safi Alqatari, Abir Hamad AlSaid, Marwan Jabr Alwazzeh
    Clinical Practice & Epidemiology in Mental Health.2024;[Epub]     CrossRef
  • The experiences of counselors caring for children and adolescents with problematic smartphone use
    Jaewon Joung, Eunhee Oh, Eun Jee Lee
    Scientific Reports.2023;[Epub]     CrossRef
  • Effects of emotion coaching group programme for mothers of preschool children with smart device overdependence: a mixed methods study
    Gumhee Lee, Sungjae Kim
    BMC Nursing.2023;[Epub]     CrossRef
  • Prevalence, determinants and consequences of problematic smartphone use among preschoolers (3–5 years) from Dhaka, Bangladesh: A cross-sectional investigation
    Faruq Abdulla, Md. Moyazzem Hossain, Mohammed Nazmul Huq, Abdul Hai, Azizur Rahman, Russell Kabir, Farhana Jahan Peya, Sinigdha Islam, Hafiz T.A. Khan
    Journal of Affective Disorders.2023; 329: 413.     CrossRef
  • Factors related to the organizational silence of Korean nurses: A systematic review and meta-analysis
    Kyungja Kang, Jeong-Hee Kim
    The Journal of Korean Academic Society of Nursing Education.2023; 29(3): 302.     CrossRef
  • What Do Mothers Consider When Choosing Screen Media Programs for Their Infants?
    Yoon Kyung Kim, Dongmee Lee, Ju Hee Park
    Family and Environment Research.2022; 60(1): 115.     CrossRef
  • Relationship between Mother’s emotional intelligence, negative parenting behaviour, Preschooler’s attachment instability, and smart device overdependence
    Gumhee Lee, Sungjae Kim
    BMC Public Health.2022;[Epub]     CrossRef
  • Factors Related to Smartphone Overdependence in Mothers of Preschoolers: A Systematic Review and Meta-Analysis
    Gumhee Lee, Eunjin Yang
    Journal of Psychosocial Nursing and Mental Health Services.2022; 60(3): 40.     CrossRef
  • Mediating Effects of Online-Based Leisure Between Parenting Attitudes and Children’s Smartphone Dependency
    Yoonju Cho
    Korean Journal of Child Studies.2021; 42(6): 695.     CrossRef
  • Pathway from Maternal Parenting Efficacy, Inappropriate Motives for Allowing Smart Devices, and Smart Device Dependency to Preschoolers’ Ability to Understand Minds
    Yun Mi Park, Min Ju Kang
    Korean Journal of Child Studies.2020; 41(6): 9.     CrossRef
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  • 9 Web of Science
  • 14 Crossref
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Original Articles
Development and Effect of a Smartphone Overdependence Prevention Program for University Students Based on Self-Determination Theory
Myung Soon Kwon, Jeong Soon Yu
J Korean Acad Nurs 2020;50(1):116-131.   Published online January 31, 2020
DOI: https://doi.org/10.4040/jkan.2020.50.1.116
AbstractAbstract PDF
Abstract Purpose:

This study aimed to develop a smartphone overdependence prevention program for college students based on the self-determination theory (SDT) and evaluate its effectiveness.

Methods:

A non-equivalent control group repeated measures design was used for the study. Participants were 64 university freshmen (experimental group: 29, control group: 35). The developed program consists of eight sessions conducted twice a week. The program was designed to promote autonomy, competence, and relatedness the three elements of the basic psychological needs of self-determination theory. The participants were assessed before the program, immediately after, and 1 and 3 months after the program. Data were collected from April 23 to September 14, 2018 and analyzed by performing a Chi-square test, Fisher’s exact test, independent t-test, and repeated measures ANOVA using SPSS/WIN 23.0.

Results:

This study showed improvement in the basic psychological needs (F=3.90, p=.010) in the experimental group compared to the control group. Specifically, competence (F=2.93, p=.035), relatedness (F=2.89, p=.045), and self-regulatory ability (F=3.11, p=.028) improved significantly.

Conclusion

Study findings indicate that the smartphone overdependence prevention program based on the Self-determination theory could be an effective intervention for improving basic psychological needs and self-regulation ability. Therefore, this program could be an efficient strategy for smartphone overdependence prevention in university students.

Citations

Citations to this article as recorded by  
  • Factors influencing smartphone overdependence in university students: an ecological model: a descriptive study
    Jeong Soon Yu, Myung Soon Kwon
    Journal of Korean Academy of Nursing.2025; 55(1): 64.     CrossRef
  • The Effect of Psychological Needs Satisfaction on Protective Gaming Beliefs and Behaviors
    Mu He, Rushui Shan, Jiahui Lu, Kwok Kit Tong
    Journal of Media Psychology.2025;[Epub]     CrossRef
  • Examining the Roles of Problematic Internet Use and Emotional Regulation Self-Efficacy on the Relationship Between Digital Game Addiction and Motivation Among Turkish Adolescents
    Öner Çelikkaleli, Rıdvan Ata, Muhammet Mustafa Alpaslan, Zafer Tangülü, Özgür Ulubey
    Behavioral Sciences.2025; 15(3): 241.     CrossRef
  • Associations Between Academic Motivation, Academic Stress, and Mobile Phone Addiction: Mediating Roles of Wisdom
    Abolghasem Yaghoobi, Kambiz Karimi, Maryam Asoudeh, Sahar Mohammadi
    International Journal of Mental Health and Addiction.2024;[Epub]     CrossRef
  • Davranışsal Bağımlılıklara Yönelik Müdahalelere İlişkin Bir Derleme
    Ayşegül SAYAN KARAHAN
    AYNA Klinik Psikoloji Dergisi.2023; 10(3): 356.     CrossRef
  • Development and Effects of a Self-Determination Improvement Program for Preventing Non-Suicidal Self-Injury in Adolescents: A Pilot Study
    Jae Woon Lee, In Sook Kim, Ji Won Kim
    Journal of Korean Academy of Fundamentals of Nursing.2022; 29(4): 506.     CrossRef
  • Current prevention strategies and future directions for problem Internet use
    Jing Shi, Mark van der Maas, Lu Yu, Qiaolei Jiang, Sarah Agasee, Nigel E Turner
    Current Opinion in Behavioral Sciences.2022; 48: 101231.     CrossRef
  • Effects of an intervention based on self-determination theory on self-health management capabilities of middle-aged women in rural areas through the concept of leisure cafeteria
    Yang Jun Park, Heui Sug Jo, Hyang Hee Hwang, Yukyung Park
    Korean Journal of Health Education and Promotion.2022; 39(1): 59.     CrossRef
  • Effects of On-Campus and Off-Campus Smartphone Overdependence Prevention Programs Among University Students
    Jeong Soon Yu, Ok Kyung Ham, Myung Soon Kwon
    Asian Nursing Research.2022; 16(4): 215.     CrossRef
  • Effectiveness of Drinking Reduction Program Focused on Self-Determination Enhancement for College Students with Problematic Drinking
    Jin-Kyoung Ma, Moon-Sook Yoo
    Journal of Korean Academy of Nursing.2021; 51(3): 265.     CrossRef
  • 482 View
  • 15 Download
  • 8 Web of Science
  • 10 Crossref
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Construction of the Addiction Prevention Core Competency Model for Preventing Addictive Behavior in Adolescents
Hyun Sook Park, Sun Young Jung
J Korean Acad Nurs 2013;43(6):714-725.   Published online December 31, 2013
DOI: https://doi.org/10.4040/jkan.2013.43.6.714
AbstractAbstract PDF
Purpose

This study was done to provide fundamental data for the development of competency reinforcement programs to prevent addictive behavior in adolescents through the construction and examination of an addiction prevention core competency model.

Methods

In this study core competencies for preventing addictive behavior in adolescents through competency modeling were identified, and the addiction prevention core competency model was developed. It was validated methodologically.

Results

Competencies for preventing addictive behavior in adolescents as defined by the addiction prevention core competency model are as follows: positive self-worth, self-control skill, time management skill, reality perception skill, risk coping skill, and positive communication with parents and with peers or social group. After construction, concurrent cross validation of the addiction prevention core competency model showed that this model was appropriate.

Conclusion

The study results indicate that the addiction prevention core competency model for the prevention of addictive behavior in adolescents through competency modeling can be used as a foundation for an integral approach to enhance adolescent is used as an adjective and prevent addictive behavior. This approach can be a school-centered, cost-efficient strategy which not only reduces addictive behavior in adolescents, but also improves the quality of their resources.

Citations

Citations to this article as recorded by  
  • Effects of a Strength Based I-Change Smoking Cessation Program for Smoking Middle School Boys
    Jung Hee Kim, Yeon Hee Choi
    Journal of Korean Academy of Nursing.2017; 47(2): 164.     CrossRef
  • Health Behaviors and Related Demographic Factors among Korean Adolescents
    YunHee Shin, Sook Jung Kang
    Asian Nursing Research.2014; 8(2): 150.     CrossRef
  • Predictors of Protective Factors for Internet Game Addiction in Middle School Students using Data Mining Decision Tree Analysis
    Young-Ran Kweon, Se-Young Kim
    Journal of Korean Academy of Psychiatric and Mental Health Nursing.2014; 23(1): 12.     CrossRef
  • Development of Expert Competency Model for Preventing Adolescent Addictive Behavior and Educational Needs of Psychiatric Mental Health Nurses
    Hyun Sook Park, Sun Young Jung
    Journal of Korean Academy of Psychiatric and Mental Health Nursing.2014; 23(4): 199.     CrossRef
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  • 2 Download
  • 4 Crossref
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Development of a Cell Phone Addiction Scale for Korean Adolescents
Hyun Young Koo
J Korean Acad Nurs 2009;39(6):818-828.   Published online December 31, 2009
DOI: https://doi.org/10.4040/jkan.2009.39.6.818
AbstractAbstract PDF
Purpose

This study was done to develop a cell phone addiction scale for Korean adolescents.

Methods

The process included construction of a conceptual framework, generation of initial items, verification of content validity, selection of secondary items, preliminary study, and extraction of final items. The participants were 577 adolescents in two middle schools and three high schools. Item analysis, factor analysis, criterion related validity, and internal consistency were used to analyze the data.

Results

Twenty items were selected for the final scale, and categorized into 3 factors explaining 55.45% of total variance. The factors were labeled as withdrawal/tolerance (7 items), life dysfunction (6 items), and compulsion/persistence (7 items). The scores for the scale were significantly correlated with self-control, impulsiveness, and cell phone use. Cronbach's alpha coefficient for the 20 items was .92. Scale scores identified students as cell phone addicted, heavy users, or average users.

Conclusion

The above findings indicate that the cell phone addiction scale has good validity and reliability when used with Korean adolescents.

Citations

Citations to this article as recorded by  
  • Psychometric evaluation of smartphone addiction scale – short version (SAS-SV) among young adults of India
    George Felix, Manoj K. Sharma, Nitin Anand, Binukumar Bhaskarapillai, Kalpana Srivastava
    Industrial Psychiatry Journal.2025;[Epub]     CrossRef
  • Unveiling the grip of mobile phone addiction: an in-depth review
    Jinyu Li, Hong Yang
    Frontiers in Psychiatry.2024;[Epub]     CrossRef
  • Associations Between Academic Motivation, Academic Stress, and Mobile Phone Addiction: Mediating Roles of Wisdom
    Abolghasem Yaghoobi, Kambiz Karimi, Maryam Asoudeh, Sahar Mohammadi
    International Journal of Mental Health and Addiction.2024;[Epub]     CrossRef
  • Effects of Self-Management Training on Smartphone Dependence in Low to Moderate Adolescent Males’ Users
    Mostafa Motamedi Heravi, Shahla Khosravan, Aeen Mohammadi, Mohammad Reza Mansoorian
    Behaviour Change.2023; 40(1): 67.     CrossRef
  • Are South Korean College Students Benefitting from Digital Learning?
    Phillip Sangwoo Lee, Chong Min Lee
    International Journal of Human–Computer Interaction.2023; 39(4): 743.     CrossRef
  • TEKNOLOJİYLE BAĞLANTILI YENİ DAVRANIŞSAL BOZUKLUKLAR / RECENT BEHAVIORAL DISORDERS DUE TO TECHNOLOGY
    Kamer Kalip, Meltem Çöl
    Eskişehir Türk Dünyası Uygulama ve Araştırma Merkezi Halk Sağlığı Dergisi.2020; 5(2): 318.     CrossRef
  • Problematic Mobile Phone and Smartphone Use Scales: A Systematic Review
    Bethany Harris, Timothy Regan, Jordan Schueler, Sherecce A. Fields
    Frontiers in Psychology.2020;[Epub]     CrossRef
  • Exercise as an Alternative Approach for Treating Smartphone Addiction: A Systematic Review and Meta-Analysis of Random Controlled Trials
    Shijie Liu, Tao Xiao, Lin Yang, Paul D. Loprinzi
    International Journal of Environmental Research and Public Health.2019; 16(20): 3912.     CrossRef
  • Are smartphones really that bad? Improving the psychological measurement of technology-related behaviors
    David A. Ellis
    Computers in Human Behavior.2019; 97: 60.     CrossRef
  • Internal Consistency and Confirmatory Factor Analysis of Smartphone Addiction Inventory (SPAI)
    Saeed Imani, Jaber Alizadeh Goradel, Sadegh Mousavi, Alireza Noroozi
    Iranian Journal of Psychiatry and Behavioral Sciences.2019;[Epub]     CrossRef
  • The relationship between addiction to mobile phone and sense of loneliness among students of medical sciences in Kermanshah, Iran
    Hale Jafari, Abas Aghaei, Alireza khatony
    BMC Research Notes.2019;[Epub]     CrossRef
  • Smart phone addiction and mindfulness: an intergenerational comparison
    Kaeun Kim, George R. Milne, Shalini Bahl
    International Journal of Pharmaceutical and Healthcare Marketing.2018; 12(1): 25.     CrossRef
  • Impact of Smartphone Addiction on Academic Performance of Business Students: A Case Study
    Md. Shamsul Arefin, Md. Islam, Mohitul Mustafi, Sharmina Afrin, Nazrul Islam
    SSRN Electronic Journal .2018;[Epub]     CrossRef
  • A Review of Studies on the Relationship between Mobile Phone Addiction and Impulsiveness
    君凤 冯
    Advances in Psychology.2017; 07(01): 60.     CrossRef
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    José De-Sola Gutiérrez, Fernando Rodríguez de Fonseca, Gabriel Rubio
    Frontiers in Psychiatry.2016;[Epub]     CrossRef
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    Laura Pavia, Paola Cavani, Maria Di Blasi, Cecilia Giordano
    Computers in Human Behavior.2016; 63: 170.     CrossRef
  • Influence of Cell Phone Addiction on Communication Skills and Interpersonal Relationship Ability of Adolescents
    Mi-Young Choi, Ji-Soo Kim
    Journal of the Korean Society of School Health.2016; 29(3): 149.     CrossRef
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    Mariano Chóliz, Lourdes Pinto, Sukanya S. Phansalkar, Emily Corr, Ayman Mujjahid, Conni Flores, Pablo E. Barrientos
    Frontiers in Psychology.2016;[Epub]     CrossRef
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    Jongsoon Park, Jongman Lee
    Journal of the Korea Society of Digital Industry and Information Management.2015; 11(4): 189.     CrossRef
  • General Strain Theory approach to the Use of Cellular Phone Dependence of Middle School Students
    Hyun-Jin Shim, Il-Hyun Lee, Hyun-Sill Rhee
    The Journal of the Korea Contents Association.2014; 14(2): 355.     CrossRef
  • Context-aware Framework and Applications for Improving UI and UX of Smartphones
    Choonsung Shin, Byoung-Ha Park, Kwang-Mo Jung
    Journal of the Korea society of IT services.2014; 13(1): 197.     CrossRef
  • The dark side of smartphone usage: Psychological traits, compulsive behavior and technostress
    Yu-Kang Lee, Chun-Tuan Chang, You Lin, Zhao-Hong Cheng
    Computers in Human Behavior.2014; 31: 373.     CrossRef
  • Development of a Cell Phone Addiction Scale for Korean Parents of Young Children.
    Hyun Young Koo
    Child Health Nursing Research.2013; 19(1): 29.     CrossRef
  • Development of a Problematic Mobile Phone Use Scale for Turkish Adolescents
    Cem Oktay Güzeller, Tolga Coşguner
    Cyberpsychology, Behavior, and Social Networking.2012; 15(4): 205.     CrossRef
  • Development and Validation Study of a Cell Phone Addiction Scale for Korean Children
    Hyun-Young Koo, Myung-Sook Yoo
    Journal of Korean Academy of Child Health Nursing.2012; 18(2): 76.     CrossRef
  • The Study on Predictors of Addictive Personality in Adolescents
    Hyun Sook Park
    Journal of Korean Academy of Psychiatric and Mental Health Nursing.2012; 21(4): 263.     CrossRef
  • Development of the Multidimensional Scale of Addictive Behavior for Adolescents
    Hyun-Sook Park, Sun-Young Jung
    Journal of the Korea Academia-Industrial cooperation Society.2012; 13(8): 3597.     CrossRef
  • Development and Effects of a Prevention Program for Cell Phone Addiction in Middle School Students
    Hyun-Young Koo
    Journal of Korean Academy of Child Health Nursing.2011; 17(2): 91.     CrossRef
  • Validation of Addictive Personality Scale for Screening Adolescents
    Hyun Sook Park, Sun Young Jung
    Journal of Korean Academy of Psychiatric and Mental Health Nursing.2011; 20(4): 395.     CrossRef
  • Factors related to the Overuse of Mobile Phone in Elementary School Students
    Kyoung Sook Lee, Hwang Ran Ahn, Kyung Hee Lee
    Journal of Korean Academy of Psychiatric and Mental Health Nursing.2011; 20(3): 271.     CrossRef
  • Factors Influencing Cell Phone Addiction in Adolescents
    Hyun Young Koo, Hyun Sook Park
    Journal of Korean Academy of Child Health Nursing.2010; 16(1): 56.     CrossRef
  • Cell Phone Addiction in Highschool Students and Its Predictors
    Hyun Young Koo
    Journal of Korean Academy of Child Health Nursing.2010; 16(3): 203.     CrossRef
  • Educational Needs for Prevention of Cell Phone Addiction in Korean Adolescents
    Hyun Young Koo, Hyun Sook Park
    Journal of Korean Academy of Child Health Nursing.2010; 16(4): 304.     CrossRef
  • 344 View
  • 7 Download
  • 33 Crossref
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