Phone: (03) 53276639
Email: g.tillman@federation.edu.au
H 219
Position: Lecturer
Discipline: Psychology


  • PhD
  • BPsych (Hons I)

Teaching Areas

  • Research Methods
  • Statistics
  • Cognitive Psychology
  • Research Supervision

Professional Associations

  • Member of the Society for Mathematical Psychology
  • Member of the Psychonomic Society.

Research Interests

Gabriel’s research involves using mathematical models to learn more about how people make decisions. More recently he has worked on understanding the neurophysiology that carries out the mental processes of decision making and the factors that affect the decisions people make.

Publications (last 5 years)

Refereed Articles

Tillman, G., Van Zandt, T., & Logan, G.D. (2020) Sequential Sampling Models Without Random Between-Trial Variability: The Racing Diffusion Model of Speeded Decision Making. Psychonomic Bulletin & Review.

Evans, N.J.., Tillman, G., & Wagenmakers, E.J. (2020) Random and Systematic Sources of Variability in Perceptual Decision-Making: Comment on Ratcliff, Voskuilen, and McKoon. Psychological Review.

Braund, T. A., Tillman, G., Palmer, D. M., & Harris, A.W.F. (2020). Verbal Memory Predicts Treatment Outcome in Syndromal Anxious Depression: An iSPOT-D Report. Journal of Affective Disorders.

Starns, J. J., Cataldo, A. M., Rotello, C. M., Annis, J., Aschenbrenner, A., Broder, A., Cox, G., Criss, A., Curl, R. A., Dobbins, I. G., Dunn, J., Enam, T., Evans, N., Farrell, S., Fraundorf, S. H., Gronlund, S. D., Heathcote, A., Heck, D. W., Hicks, J., L., Huff, M. J., Kellen, D., Key, K., N., Kilic, A., Klauer, C., Kraemer, K. R., Leite, F. P., Lloyd, M. E., Malejka, S., Mason, A., McAdoo, R. M., McDonough, I. M., Michael, R., Mickes, L., Mizrak, E., Morgan, D. P., Mueller, S. T., Osth, A., Reynolds, A., Seale-Carlisle, T. M., Singmann, H., Sloane, J. F., Smith, A., Tillman, G., van Ravenzwaaij, D., Weidemann, C. T., Wells, G., White, C. N., & Wilson, J. (2019) Assessing theoretical conclusions with blinded inference to investigate a potential inference crisis. Advances in Methods and Practices in Psychological Science.

Tillman, G. & Evans, N.J. (2019) Hierarchical Bayesian Mixture Models of Processing Architectures and Stopping Rules. Journal of Mathematical Psychology.

Servant, M., Tillman, G., Logan, G.D., Schall, J.D., & Palmeri, T.J (2019) Neurally constrained modeling of speed-accuracy trade-off during visual search: Gated accumulation of modulated evidence. Journal of Neurophysiology.

Braund, T. A., Palmer, D. M., Tillman, G., Hanna. H., & Gordon, E. (2019). Increased Chronic Stress Predicts Greater Emotional Negativity Bias and Poorer Social Skills but Not Cognitive Functioning in Healthy Adults. Anxiety, Stress, & Coping.

Tillman, G., Howard, Z., Garret, P., & Eidels, A. (2017). The Stroop Effect From a Mixture of Reading Processes: A Fixed-Point Analysis. Proceedings of the 39th Annual Conference of the Cognitive Science Society.

Tillman, G., Strayer, D., Eidels, A., & Heathcote, A. (2017). Modeling Cognitive Load Effects of Conversation Between a Passenger and Driver. Attention, Perception, & Psychophysics. 79(6), p. 1795-1803.

Tillman, G., van Ravenzwaaij, D., Osth, A. F., & Heathcote, A. (2017). A Diffusion Decision Model Analysis of Evidence Variability in the Lexical Decision Task. Psychonomic Bulletin & Review.

Tillman, G., Benders, T., Brown, S. D., & van Ravenzwaaij, D. (2017). An Evidence Accumulation Model of Acoustic Cue Weighting in Vowel Perception. Journal of Phonetics. 61, p. 1-12.

Tillman, G., Eidels, A., & Finkbeiner, M. (2016). A Reach-To-Touch Investigation on the Nature of Reading in the Stroop Task. Attention, Perception, & Psychophysics. 78(8), p. 2547-2557.

Grants (last 5 years)

  • Postgraduate Research Scholarship. Awarded: $76176.
  • Government Research Training Scheme. Awarded: $4750.
  • Australian College of Applied Psychology Small Research Grant. Awarded: $7992.

Research Higher Degree Completions (last 5 years)

Emily Holswich, Master of Clinical Psychology, 2018: Measurement and Risk Factors of Orthorexia Nervosa