The relationship between different types of Internet addiction and attentional bias: from the view of stress action

• Project/Area Number: 18K13349
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 10030:Clinical psychology-related
• Research Institution: The University of Tokushima
• Principal Investigator: TSUMURA Hideki 徳島大学, 大学院社会産業理工学研究部(社会総合科学域), 講師 (70636836)
• Project Period (FY): 2018-04-01 – 2021-03-31
• Project Status: Completed (Fiscal Year 2020)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
• Keywords: インターネット依存 / 注意バイアス / ストレス / コルチゾール / αアミラーゼ

Outline of Final Research Achievements

Study 1 aimed to characterize stress responses to psychosocial stressors in Internet addiction. The results showed that the negative affect, blood pressure, and alpha-amylase responses were equally elevated, while the cortisol response was lower in Internet addiction group than in the control group. Study 2 aimed to examine the relationship between attentional bias and stress in Internet addiction. The results showed that there was no difference in the strength of the relationship between stress response and attentional bias toward Internet-related stimuli between the Internet-dependent and control groups. Because the relationship between attentional bias and Internet addiction may depend on object of addiction including gaming, shopping, and SNS, the further analyses by different types of Internet addiction will be conducted.

Academic Significance and Societal Importance of the Research Achievements

本研究は、インターネット依存では、他の依存症と同様に、ストレスに対するコルチゾール反応の鈍化が見られることが明らかとなった。この結果は、物質を依存対象としない行動嗜癖のインターネット依存が、アルコール依存等の物質を使用する依存症と同様の生理学的特徴を有することを示唆する。インターネットから注意をそらせない注意バイアスとストレスの関連性は示されなかったが、インターネット依存のタイプ別に（たとえば、ゲームへの依存、SNSへの依存等）今後さらなる検証をすすめる。

Research Products

• [Journal Article] Relationship between insomnia with alcohol drinking before sleep (Ne-Zake) or in the morning (Mukae-Zake) among Japanese farmers (2021)
  • Author(s): Sato,R,Hisamatsu,T,Tsumura,H,Fukuda,M,Taniguchi,K,Takeshita,H,Kanda,H.
  • Journal Title: Alchol Volume: 93 Pages: 57-62
  • DOI: 10.1016/j.alcohol.2020.11.005
  • Peer Reviewed / Open Access
• [Journal Article] At-risk Internet addiction and related factors among junior high school teachers?based on a nationwide cross-sectional study in Japan (2019)
  • Author(s): Iwaibara Ayumi、Fukuda Mari、Tsumura Hideki、Kanda Hideyuki
  • Journal Title: Environmental Health and Preventive Medicine Volume: 24 Issue: 1 Pages: 1-8
  • DOI: 10.1186/s12199-018-0759-3
  • NAID: 120006939633
  • Peer Reviewed / Open Access
• [Journal Article] Problematic Internet Use and its Relationship with Psychological Distress, Insomnia, andAlcoholism among Schoolteachers in Japan. (2018)
  • Author(s): Tsumura H, Kanda H, Sugaya N, Tsuboi S, Takahashi K.
  • Journal Title: Cyberpsychology, Behavior, and Social Networking. Volume: 21 Issue: 12 Pages: 288-296
  • DOI: 10.1089/cyber.2018.0233
  • Peer Reviewed / Open Access
• [Presentation] The Relationship Between Alcohol Drinking Before Sleeping(Ne-Zake) or in the Morning(Mukae-Zake) and Sleeplessness Among Farmers (2020)
  • Author(s): Sato Rie, Hisamatsu Takashi, Tsumura Hideki, Fukuda Mari, Esumi Yukio, Mikajiri Kaoru, Tamura Shusaku, Kanda Hideyuki
  • Organizer: American Heart Association Epidemiology and Prevention
• [Presentation] 山陰地方の中学・高校教職員におけるインターネット利用状況の実態 (2019)
  • Author(s): 神田 秀幸, 福田 茉莉, 土江 梨奈, 津村 秀樹, 久松 隆史
  • Organizer: 第63回中国四国合同産業衛生学