A psychoeducational program to prevent aggressive behavior among japanese early adolescents

Mikayo Ando, Takashi Asakura, Shinichiro Ando, Bruce Simons-Morton

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


This study evaluates the impact of a school-based intervention program on aggressive behavior among junior high school students in Japan. One hundred and four seventh-graders were enrolled in the program and completed Time 1, Time 2, and Time 3 surveys. The program was implemented in two classes between Time 1 and Time 2 surveys (the first treatment group) and in two other classes between Time 2 and Time 3 surveys (the delayed treatment group). The program included four weekly lessons related to problem solving, stress management, and communication. The initial intervention group reported a significant increase in appropriate relationships with classmates. Aggressive behavior significantly decreased from Time 1 to Time 3 in both groups and from Time 2 to Time 3 in the delayed treatment group, but no treatment group effect was noted. Additional modification of the program may be needed to achieve decreases in aggressive behavior.

Original languageEnglish
Pages (from-to)765-776
Number of pages12
JournalHealth Education and Behavior
Issue number5
Publication statusPublished - Oct 2007
Externally publishedYes


  • Aggressive behavior
  • Bullying
  • Early adolescent
  • Intervention
  • Schools

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Public Health, Environmental and Occupational Health


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