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Object perception relies on connectedness, not necessarily maximal extent. This study shows spatial connectedness is key for identifying physical objects, challenging the necessity of maximality in object concepts.

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Area of Science:

  • Cognitive Science
  • Psychology
  • Philosophy of Mind

Background:

  • Humans perceive the world as discrete physical objects, not just collections of properties.
  • Existing theories propose object concepts involve part-whole relations and spatial connectedness.
  • One theory defines objects as connected spatial items of maximal extent.

Purpose of the Study:

  • To empirically test the proposed theory of object concepts.
  • To investigate the roles of connectedness and maximality in object identification.
  • To determine if maximality is a necessary feature for object status.

Main Methods:

  • Four experiments were conducted using descriptions and diagrams of spatial items.
  • Participants evaluated items based on their relative positions.
  • Tasks included judging object status, wholeness, and object count.

Main Results:

  • All experiments provided evidence supporting connectedness as a factor in object perception.
  • Little empirical support was found for maximality as a necessary component of object status.
  • Connectedness appears more critical than maximality for identifying objects.

Conclusions:

  • Connectedness is a significant contributor to how we identify physical objects.
  • The maximality principle, as defined, is not essential for an item to be considered an object or a whole.
  • Findings refine theories of object concept formation in cognitive science.