Alen Hajnal

Associate Professor

Research Interests

Perception and Action, Cognition, Ecological Psychology, Ergonomics

Perception, Action and Cognition Lab

Current Teaching

  • Introduction to Statistics for the Behavioral Sciences (PSY360)
  • Research methods (PSY361)
  • Testing and Assessment (PSY411)
  • Sensation and perception (PSY420)
  • Cognitive Psychology (PSY425)
  • Cognitive Processes (PSY722)
  • MATLAB for behavioral scientists (PSY783)
  • History of Modern Psychology (PSY718)

Peer-Reviewed Journal Articles

Hajnal, A., Wagman, J. B., Doyon, J. K., & Clark, J. D. (in press). Is Perception of Stand-on-able-ness Equivalent across Degrees of Dynamic Touch? American Journal of Psychology.
Wagman, J. B., Dayer, A., & Hajnal, A. (2017). Heads up!  Dynamic similitude for perception with an object wielded by head or hand. Experimental Psychology, 64(3), 184-190.
Hajnal, A., Wagman, J. B., Doyon, J. K., & Clark, J. D. (2016). Perception of stand-on-ability: Do geographical slants feel steeper than they look? Perception, 45(7),768-786.


Perisho, S. T., Kelty-Stephen, D. G., Hajnal, A., Houser, D., & Kuczaj II, S. A. (2016). Fractal scaling in bottlenose dolphin (Tursiops truncatus) echolocation: A case study. Physica A: Statistical Mechanics and its Applications, 43, 221–230.

Hajnal, A., Bunch, D. A. & Kelty-Stephen, D. G. (2016). Pulling out all the stops to make the distance: Effects of effort and optical information in distance perception responses made by rope pulling. Attention, Perception & Psychophysics, 78(2), 685-699. Doi:10.3758/s13414-015-1035-x

Wagman, J. B., & Hajnal, A. (2015). Use your head! Perception of action possibilities by means of an object attached to the head. Experimental Brain Research, 1-8Doi:10.1007/s00221-015-4509-0

Sacco, D. F., Bruton, S. V., Hajnal, A., & Lustgraaf, C. J. (2015). The Influence of Disclosure and Ethics Education on Perceptions of Financial Conflicts of Interest. Science and Engineering Ethics21(4), 875-894.

Wagman, J. B., & Hajnal, A. (2014). Task-specificity and anatomical independence in perception of surface properties by means of a wielded object. Journal of Experimental Psychology: Human Perception and Performance, 40(6), 2372-2391.

Hajnal, A., Rumble, D., Shelley-Tremblay, J. F. & Liu, W. (2014). Optical Push by Geographical Slant Impacts Postural Sway, Ecological Psychology26(4), 283-300.

Wagman, J. B., & Hajnal, A. (2014). Getting off on the right (or left) foot: perceiving by means of a rod attached to the preferred or non-preferred foot. Experimental Brain Research, 232(11), 3591-3599.

Hajnal, A., Bunch, D. A. & Kelty-Stephen, D. G. (2014). Going for distance and going for speed: Effort and optical variables shape information for distance perception from observation to response. Attention, Perception & Psychophysics, 76(4), 1015-1035.

Farkas, A. J. & Hajnal, A. (2013). Loudness threshold as a function of sound source location using circum-aural headphones in noisy and sound-proof acoustic environments. Frontiers in Psychological and Behavioral Science, 2(3), 89-95.

Durgin, F. H., Hajnal, A., Li, Z., Tonge, N., & Stigliani, A. (2011). An imputed dissociation might be an artifact: Further evidence for the generalizability of the observations of Durgin et al. (2010). Acta Psychologica, 138, p. 281–284. doi:10.1016/j.actpsy.2010.09.002

Hajnal, A., Abdul-Malak, D. T., & Durgin, F. H. (2011). The Perceptual Experience of Slope by Foot and by Finger. Journal of Experimental Psychology: Human Perception and Performance, 37(3), 709-719, doi: 10.1037/a0019950

Harrison, S. J., Hajnal, A., Lopresti-Goodman, S., Isenhower, R. W., & Kinsella-Shaw, J. M. (2011). Perceiving Action-Relevant Properties of Tools Through Dynamic Touch: Effects of Mass Distribution, Exploration Style, and Intention. Journal of Experimental Psychology: Human Perception and Performance, 37(1), 193-206, doi: 10.1037/a0020407

Stephen, D. G., & Hajnal, A. (2011). Transfer of calibration between hand and foot: Functional equivalence and fractal fluctuations. Attention, Perception & Psychophysics, 73(5), 1302-1328, doi: 10.3758/s13414-011-0142-6

Durgin, F. H., Hajnal, A., Li, Z., Tonge, N., & Stigliani, A. (2010). Palm boards are not action measures: an alternative to the two systems theory of geographical slant perception. Acta Psychologica, 134, p. 182-197,

Durgin, F. H., Li, Z. & Hajnal, A. (2010). Slant Perception in Near Space is Categorically Biased. Attention, Perception & Psychophysics, 72(7),  1875-1889, doi: 10.3758/APP.72.7.1875

Hajnal, A., & Shiratuddin, M. F. (2010). A Pilot Study on Design Performance in a Collaborative Virtual Environment. The International Journal of Learning, 17(3), 509-521

Hajnal, A., Richardson, M. J., Harrison, S. J. & Schmidt, R. C. (2009). Location, but not Amount of Stimulus Occlusion Influences the Stability of Visual Coordination. Experimental Brain Research, 199(1), p. 89-93, doi: 10.1007/s00221-009-1958-3


Peer-Reviewed Conference Proceedings

Shiratuddin, M. F., Hajnal, A., Farkas, A., Wong, K. W., & Legradi, G. (2012). A proposed framework for an Interactive Visuotactile 3D Virtual Environment system for visuomotor rehabilitation of stroke patients. In Computer & Information Science (ICCIS), 2012 International Conference on (Vol. 2, pp. 1052-1057). IEEE, doi:10.1109/ICCISci.2012.6297181

Farkas, A. J., Hajnal, A., Shiratuddin, M. F., & Szatmary, G. (2010). A Proposed Treatment for Visual Field Loss caused by Traumatic Brain Injury using Interactive Visuotactile Virtual Environment. In: Sobh, T., & Elleithy, K. (Eds.) Innovations in Computing Sciences and Software Engineering, Springer: Dordrecht, The Netherlands, 495–498,