Observers' sensitivity to dynamic anomalies in collisions

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Abstract

The present study examined observers' ability to discriminate canonical and dynamically anomalous collisions that were presented in either frictionless or frictional systems. Whereas previous research has provided qualitative demonstrations that dynamic information can be extracted from visual events, the current study provides a parametric assessment of observers' sensitivity to dynamic invariants. Our findings indicate that observers are competent when viewing both familiar, terrestrial (frictional) systems and unfamiliar but computationally simpler, 0-G (frictionless) systems. Thus, our sensitivity to these dynamic invariants in visual events is robust in natural systems whose dynamic properties differ from those of the environment in which we evolved and developed. © 1987 Psychonomic Society, Inc.

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Kaiser, M. K., & Proffitt, D. R. (1987). Observers’ sensitivity to dynamic anomalies in collisions. Perception & Psychophysics, 42(3), 275–280. https://doi.org/10.3758/BF03203079

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