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Related Experiment Video

Updated: Jun 17, 2026

Three Laboratory Procedures for Assessing Different Manifestations of Impulsivity in Rats
09:12

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Published on: March 17, 2019

Sleep patterns and impulse control among Japanese junior high school students.

Takeru Abe1, Akihito Hagihara, Koichi Nobutomo

  • 1Department of Health Services Management and Policy, Kyushu University Graduate School of Medicine, Higashi-Ku, Fukuoka, Japan. takeru-a@hsmp.med.kyushu-u.ac.jp

Journal of Adolescence
|December 17, 2009
PubMed
Summary

Adolescents who go to sleep after midnight show decreased impulse control. This sleep pattern is linked to lifestyle factors like screen time and cram school attendance, offering insights for behavioral problem prevention.

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Last Updated: Jun 17, 2026

Three Laboratory Procedures for Assessing Different Manifestations of Impulsivity in Rats
09:12

Three Laboratory Procedures for Assessing Different Manifestations of Impulsivity in Rats

Published on: March 17, 2019

Area of Science:

  • Adolescent psychology
  • Sleep science
  • Behavioral science

Background:

  • Adolescents with poor impulse control often display behavioral issues.
  • Lifestyle factors are known to influence impulse control.
  • The specific relationship between adolescent sleep patterns and impulse control remains under-explored.

Purpose of the Study:

  • To investigate the association between sleep patterns and impulse control in Japanese junior high school students.
  • To identify lifestyle factors correlated with late bedtimes in adolescents.

Main Methods:

  • A nationwide survey was administered to 1934 Japanese junior high school students.
  • Data collected included sleep patterns, impulse control levels, and various lifestyle factors.
  • Statistical analysis was performed to determine significant associations.

Main Results:

  • A significant link was found between decreased impulse control and bedtimes after midnight.
  • Late bedtimes (after midnight) were associated with older age, increased television viewing, no extracurricular activities, frequent convenience store visits, and attending cram schools.
  • Adolescents sleeping after midnight demonstrated significantly lower impulse control.

Conclusions:

  • Going to sleep after midnight is significantly associated with decreased impulse control in adolescents.
  • Understanding lifestyle factors contributing to late bedtimes is crucial for developing interventions.
  • This research provides valuable data for preventing behavioral problems stemming from reduced impulse control in school-aged children.