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Evidence for Inferential Isolation

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Vertical Motion

The trajectories implied by representational momentum reveal that the effect reflects impetus mechanics rather than Newtonian principles (Freyd & Jones, 1994; Kozhevnikov & Hegarty, 2001; Hubbard, Blessum, & Ruppel, 2001; Hubbard, 2013). And these trajectories are independent of subjects' scientific knowledge (Freyd & Jones, 1994; Kozhevnikov & Hegarty, 2001). Representational momentum therefore reflects judgement-independent expectations about objects’ movements which track momentum in accordance with a principle of impetus.% [^1]


Carey, S., & Spelke, E. S. (1994). Domain-specific knowledge and conceptual change. In L. Hirschfeld & S. Gelman (Eds.), Mapping the mind: Domain specificity in cognition and culture. Cambridge: Cambridge University Press.
Fodor, J. (1983). The modularity of mind: An essay on faculty psychology. Cambridge, Mass ; London: MIT Press.
Freyd, J. J., & Jones, K. T. (1994). Representational momentum for a spiral path. Journal of Experimental Psychology: Learning, Memory, and Cognition, 20(4), 968–976.
Hubbard, T. L. (2013). Launching, Entraining, and Representational Momentum: Evidence Consistent with an Impetus Heuristic in Perception of Causality. Axiomathes, 23(4), 633–643.
Hubbard, T. L., Blessum, J. A., & Ruppel, S. E. (2001). Representational momentum and Michotte’s “launching effect” paradigm (1946/1963). Journal of Experimental Psychology: Learning, Memory, and Cognition, 27(1), 294–301.
Kahneman, D., Treisman, A., & Gibbs, B. J. (1992). The reviewing of object files: Object-specific integration of information. Cognitive Psychology, 24, 175–219.
Kozhevnikov, M., & Hegarty, M. (2001). Impetus beliefs as default heuristics: Dissociation between explicit and implicit knowledge about motion. Psychonomic Bulletin & Review, 8(3), 439–453.
Scholl, B. J. (2007). Object Persistence in Philosophy and Psychology. Mind & Language, 22(5), 563–591.
Spelke, E. S. (2022). What Babies Know: Core Knowledge and Composition Volume 1. Oxford: Oxford University Press.