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Personal profile


I study sensation and perception. I primarily use psychophysics to investigate perceptual after-effects, and I use decision-making experiments to understand how changes in perception shape our predictions, perceptions, and metacognitions. Some of my studies consider these things in relationship to causality; for example, do we infer cause and effect, or can we see it? What does a predictive brain tell us about all that?

Education/Academic qualification

Psychology, Bachelor (Hons), University of Queensland

Research area keywords

  • Perception
  • Decision Making
  • Metacognition
  • Neuroscience
  • Sensory Processing

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Research Output 2014 2019

Confidence as a diagnostic tool for perceptual aftereffects

Gallagher, R. M., Suddendorf, T. & Arnold, D. H., 1 Dec 2019, In : Scientific Reports. 9, 1, 12 p., 7124.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
6 Citations (Scopus)

An object-centered aftereffect of a latent material property: A squishiness visual aftereffect, not causality adaptation

Arnold, D. H., Petrie, K., Gallagher, R. & Yarrow, K., Jul 2015, In : Journal of vision. 15, 9, 9 p., 4.

Research output: Contribution to journalArticleResearchpeer-review

11 Citations (Scopus)

Interpreting the temporal dynamics of perceptual rivalries

Gallagher, R. M. & Arnold, D. H., 1 Nov 2014, In : Perception. 43, 11, p. 1239-1248 10 p.

Research output: Contribution to journalArticleResearchpeer-review