• 1475 Citations
  • 18 h-Index

Research output per year

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Personal profile


I am a social-evolutionary psychologist and my research focusses on gaining a better understanding of the features and functions of emotions, especially disgust. More recently, I have been investigating the causes and consequences of interpersonal revenge. In addition, with my graduate students, I have investigated such topics as gullibility, dehumanization, inspiration, and the source effect for disgust. My main teaching area is social psychology, which I teach at undergraduate level. I am Director of the Psychology Honours program, and I have held several key service roles in the university including Deputy Chair of the University Human Research Ethics Committee. I serve on several journal editorial boards and as an Assessor for the Australian Research Council.

Research interests

  • Disgust
  • Revenge
  • False beliefs 


I am Unit Convenor for the 2nd year core unit in Social and Personality Psychology, and I regularly deliver lectures at all undergraduate levels on social and evolutionary psychological topics. I also supervise Honours and post-graduate students each year. I currently teach on the following courses.

PSYC105 Introduction to Psychology II

PSY234 Social and Personality Psychology (Unit Chair)

PSYC 439 Evolution of Social, Sexual and Emotional Behaviour

Through my teaching and research, I hope to inspire others to value learning for its own sake.

Research student supervision

I am the principal supervisor of two Ph.D students:

  • Alessa Teunisse, who is researching the psychology of gullibility.
  • Mick Weston, who is researching the source effect for disgust.

Community engagement

I have held several key administrative service roles within the university. Over the past 5 years I have been Deputy Chair of the University Human Research Ethics Committee, and I have served on the University Academic Standards and Quality Committee. I am currently Director of the Psychology Honours program. I have served as an Assessor for the Australian Research Council for over a decade, and on the editorial boards of Personal Relationships and Frontiers: Evolutionary Psychology.

Research engagement

Together with my colleagues, we have attracted over half-a-million dollars of funding from the ARC for our research on disgust. My research has been described in the leading textbook on the field of evolutionary psychology by David Buss and is reported in local and international media. 

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Disgust as a psychosocial defence against infectious disease

Stevenson, D., Case, T., Hodgson, D., Oaten, M. & Newton, J.


Project: Research

  • Mating strategies and disgust

    Case, T. & Stevenson, R. J.


    Project: Research

  • Research Outputs

    Gotcha! Behavioural validation of the Gullibility Scale

    George, M. S., Teunisse, A. K. & Case, T. I., 1 Aug 2020, In : Personality and Individual Differences. 162, p. 1-6 6 p., 110034.

    Research output: Contribution to journalArticle

  • I should have known better: development of a self-report measure of gullibility

    Teunisse, A. K., Case, T. I., Fitness, J. & Sweller, N., 1 Mar 2020, In : Personality and Social Psychology Bulletin. 46, 3, p. 408-423 16 p.

    Research output: Contribution to journalArticle

  • 2 Citations (Scopus)

    The animal origins of disgust: reports of basic disgust in nonhuman great apes

    Case, T. I., Stevenson, R. J., Byrne, R. W. & Hobaiter, C., Jul 2020, In : Evolutionary Behavioral Sciences. 14, 3, p. 231-260 30 p.

    Research output: Contribution to journalArticle

    Open Access
  • 2 Citations (Scopus)
    2 Downloads (Pure)

    A proximal perspective on disgust

    Stevenson, R. J., Case, T. I., Oaten, M. J., Stafford, L. & Saluja, S., 1 Jul 2019, In : Emotion Review. 11, 3, p. 209-225 17 p.

    Research output: Contribution to journalArticle

  • 2 Citations (Scopus)

    The role of disgust in male sexual decision-making

    Oaten, M., Stevenson, R. J., Tapp, C., Case, T. I. & Cousins, A., Jan 2019, In : Frontiers in Psychology. 9, JAN, p. 1-10 10 p., 2602.

    Research output: Contribution to journalArticle

    Open Access
  • 2 Citations (Scopus)
    11 Downloads (Pure)


    Division of Linguistics and Psychology Award

    Trevor Case (Recipient), 2008

    Prize: Honorary award

  • Press / Media

    The Poop Smell Experiment and What Love Truly Means

    Trevor Case


    1 item of Media coverage

    Press/Media: Research