TOSHIHIKO SOUMA

Last Updated :2025/05/09

Affiliations, Positions
Graduate School of Humanities and Social Sciences, Professor
E-mail
soumanhiroshima-u.ac.jp
Self-introduction
I am researching social psychology. I study the dynamism of interpersonal relationships.

Basic Information

Academic Degrees

  • Doctor of Philosophy, Hiroshima University
  • Master, Hiroshima University

Educational Activity

  • [Bachelor Degree Program] School of Economics : Economics : Economics and Management
  • [Master's Program] Graduate School of Humanities and Social Sciences : Division of Humanities and Social Sciences : Management Sciences Program
  • [Doctoral Program] Graduate School of Humanities and Social Sciences : Division of Humanities and Social Sciences : Management Sciences Program

Research Fields

  • Social sciences;Psychology;Social psychology

Research Keywords

  • leader reward and punishment
  • exclusivity in personal networks
  • approach and avoidance motivation
  • child rearing
  • abuse
  • expansion of personal networks
  • interpersonal relationships
  • domestic violence
  • prevention

Educational Activity

Course in Charge

  1. 2025, Undergraduate Education, Intensive, Industrial and Organizational Psychology
  2. 2025, Undergraduate Education, 3Term, Special Lectures(Information Studies)
  3. 2025, Undergraduate Education, Year, Seminar
  4. 2025, Undergraduate Education, First Semester, Social Psychology
  5. 2025, Graduate Education (Doctoral Program) , Second Semester, Project Research
  6. 2025, Graduate Education (Master's Program) , Second Semester, Advanced Social Psychology
  7. 2025, Graduate Education (Master's Program) , First Semester, Data Analysis for Research Concerning Social Behavior
  8. 2025, Graduate Education (Master's Program) , First Semester, Special Seminar in Management

Research Activities

Academic Papers

  1. ★, SOUMA Toshihiko, URA Mitsuhiro, ISOBE Chikae, HASEGAWA Koji, & MORITA Akiko 2008 How do shy people expand their social networks?:Using social surrogates as a strategy to expand one's network, Asian Journal of Social Psychology, 20080301
  2. ★, Causes of Aggressive Action Due to Dispositional Aggressiveness: Implications of Provocation and Self-Regulation Resource, The Japanese Journal of Personality, 26(1), 23-37, 2017
  3. Do social motivation effects extend beyond the individual? The convergence process of social approach motivation in dyadic relationships, THE JAPANESE JOURNAL OF EXPERIMENTAL SOCIAL PSYCHOLOGY, 56(2), 165-174, 2017
  4. Does Employees' Prevention Focus Determine Their Taking Charge : The Moderating Effect of Outcome Interdependence, 29(2), 129-138, 201602
  5. Is the effect of organizational justice on workers' self-regulation affected by employment status or permanent orientation in non-permanent workers?, 19(1), 1-15, 2017
  6. How Group Perception Affects What People Share and How People Feel: The Role of Entitativity and Epistemic Trust in the "Saying-Is-Believing" Effect, FRONTIERS IN PSYCHOLOGY, 12, 20210922
    Link to Paper Search Results by DOI