Dr. John Callaghan

Associate Professor

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Biography

Professor John Callaghan is an Associate Professor Emeritus in the Department of Biological Sciences at the University of Southern California. He received his Ph.D. in Sociopsychology from the University of Southern California in 1971. His academic journey includes significant positions such as Director at the University, Associate Professor, and various roles at St. Mary’s College, University of London Institute of Education. His research primarily focuses on the psychology of sports, particularly exploring the motivation of elite athletes, the dynamics of aggression in players and spectators, and the relationship between anxiety levels and performance. In addition to these topics, he has a keen interest in the Olympic Movement and international sports. Notably, he co-authored a journal article discussing the structural model of determinants related to athlete dissatisfaction, published in the International Journal of Sport Sciences. His work connects psychological principles with physical education and sports administration, contributing valuable insights to the fields of sports psychology and education.

Research Interests

Experience

Associate Professor

1982-01-01 — Present

University of Southern California • Los Angeles, CA

Director

1977-01-01 — 1982-01-01

University of Southern California • Los Angeles, CA

Principal Lecturer

1973-01-01 — 1977-01-01

St. Mary’s College, University of London Institute of Education •

Assistant Professor

1971-01-01 — 1973-01-01

University of Southern California • Los Angeles, CA

Lecturer/Senior Lecturer

1960-01-01 — 1965-01-01

St. Mary’s College, University of London Institute of Education •

Requirements for University of Southern California

Master Program
Requirements
GPA Requirement
Required:3
TOEFL
Listening
Required:20
Reading
Required:20
Writing
Required:20
Speaking
Required:20
Total
Required:90
IELTS
Listening
Required:6
Reading
Required:6
Writing
Required:6
Speaking
Required:6
Overall
Required:6.5
GRE General
Prerequisites
Bachelor's degree in Engineering, Math, or Hard Science
Application Checklist
  • Online application
  • Official transcripts
  • Personal Statement
  • Resume/CV
  • Letters of Recommendation (not required for MS CS, but allowed)
Specialization Notes

GRE is NOT required for Master's applicants for 2025-2026.

Master Program
Requirements
GPA Requirement
Required:3
TOEFL
Listening
Required:20
Reading
Required:20
Writing
Required:20
Speaking
Required:20
Total
Required:100
GRE General
Prerequisites
Bachelor's degree in engineering or related science
Application Checklist
  • Official transcripts
  • GRE General scores
  • TOEFL scores (International)
  • Three letters of recommendation
  • Personal Statement
Specialization Notes

Requires general GRE for all graduate degrees.

Doctorate Program
Requirements
GPA Requirement
Required:3
TOEFL
Total
Required:100
IELTS
Overall
Required:7
Prerequisites
Undergraduate degree in Physics or related field
Application Checklist
  • Online application
  • Transcripts
  • Statement of Purpose
  • Letters of Recommendation
  • Writing Sample (if requested)
Specialization Notes

GRE requirements vary; many Dornsife programs have made it optional.

Master Program
Requirements
GPA Requirement
Required:3
GMAT
Total Score
Required:714
Overall
Required:714
TOEFL
Total
Required:100
Prerequisites
Bachelor's degree from accredited institution Knowledge of Calculus
Application Checklist
  • Resume/CV
  • Required essays
  • Official transcripts
  • GMAT/GRE scores
  • TOEFL/IELTS (International)
Specialization Notes

MS in Finance is a rigorous program at Marshall School of Business.

Master Program
Requirements
GPA Requirement
Required:3
TOEFL
Total
Required:100
IELTS
Overall
Required:7
Prerequisites
Bachelor's degree
Application Checklist
  • Resume
  • Personal Statement
  • Writing Sample/Journalism Portfolio
  • Two letters of recommendation
  • Kira Talent Video Interview
  • Official transcripts
Specialization Notes

GRE is not required for Summer 2026 admission.