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Selecting object pairs for action: Is the active object always first?

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Perception-action links use direct routes for real objects and indirect semantic routes for pictures. Real objects rely on sensory-motor skills, while pictures can be influenced by semantic knowledge, supporting a dual-route model.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Human-Computer Interaction

Background:

  • Perception guides action through direct (affordance) and indirect (semantic) pathways.
  • Understanding how these pathways are selected is crucial for explaining perception-action links.

Purpose of the Study:

  • To investigate factors influencing the selection between direct and indirect perception-action routes.
  • To examine how object properties and presentation format affect action decisions.

Main Methods:

  • Experiment 1: Participants selected interacting real objects amidst distractors.
  • Experiment 2: Participants decided on object interaction using object images with varying hand grips.

Main Results:

  • Real objects and congruent grips favored direct, sensory-motor processing.
  • Semantic relationships interfered with action decisions for pictured objects, especially when incongruent.
  • Action decisions were faster with direct affordance cues and when the active object preceded the passive one.

Conclusions:

  • Strong affordance cues (real objects, congruent grips) activate direct perception-action routes bypassing semantics.
  • Weak affordance cues (pictures) allow semantic knowledge to influence action decisions.
  • Findings support a dual-route model of perception-action, modulated by cue strength and semantic interference.