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Related Experiment Video

Updated: May 25, 2025

Measuring the Switch Cost of Smartphone Use While Walking
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Bidirectional association between problematic smartphone use and aggressive behavior: A cross-lagged longitudinal

Fajuan Rong1, Junhan Cheng1, Jie Hu1

  • 1Department of Maternal, Child and Adolescent Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.

Journal of Behavioral Addictions
|February 27, 2025
PubMed
Summary

Problematic smartphone use (PSU) predicts aggressive behavior in older adolescents. Aggressive behavior also increases PSU in both younger and older teens, highlighting a complex relationship needing intervention.

Keywords:
aggressive behaviorcross-lagged analysisproblematic smartphone useyounger and older adolescents

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Area of Science:

  • Psychology
  • Adolescent Development
  • Behavioral Science

Background:

  • Problematic smartphone use (PSU) is a global concern, especially among adolescents.
  • PSU is strongly associated with aggressive behavior, but the causal pathways are not fully understood.

Purpose of the Study:

  • To investigate the bidirectional relationship between aggressive behavior and PSU in adolescents.
  • To explore age-specific differences in this relationship.

Main Methods:

  • A two-wave longitudinal study was conducted with 2,650 middle and high school students.
  • Data were collected 15 months apart, and cross-lagged models were used for analysis.

Main Results:

  • PSU at Time 1 predicted aggressive behavior at Time 2 for older adolescents (15-19 years), but not younger ones (11-14 years).
  • Aggressive behavior at Time 1 predicted PSU at Time 2 for both age groups.
  • Higher PSU emerged as a significant risk factor for aggressive behavior in older adolescents.

Conclusions:

  • The study clarifies the complex, bidirectional links between PSU and adolescent aggression.
  • Findings offer theoretical insights for developing targeted prevention and intervention strategies.
  • PSU is identified as a risk factor, particularly for older adolescents, emphasizing the need for tailored support.