Verifying different-modality properties for concepts produces switching costs.

Area of Science:

• Cognitive Psychology
• Cognitive Science
• Neuroscience

Background:

• Perceptual symbol systems theory posits that concept representation relies on sensorimotor simulations.
• Previous research indicates modality switching incurs processing costs during perceptual tasks.
• This suggests similar costs may occur in conceptual processing if it relies on perception.

Purpose of the Study:

• To investigate whether modality switching costs occur during conceptual processing.
• To test the hypothesis that sensorimotor simulations underlie conceptual representation.

Main Methods:

• Participants verified properties of concepts presented as words.
• A modality switching paradigm was employed, comparing verification times across same-modality and different-modality property checks.
• A control experiment ruled out associative priming as an explanation for observed effects.

Main Results:

• A significant processing cost was observed when switching between different sensory modalities for concept property verification.
• This modality switching cost was analogous to costs found in purely perceptual tasks.
• The effect persisted even without explicit instructions to use imagery, and was not attributable to associative priming.

Conclusions:

• The findings support the perceptual symbol systems hypothesis.
• Sensorimotor simulations appear to play a crucial role in conceptual processing.
• Conceptual tasks may recruit the same underlying sensorimotor mechanisms as perceptual tasks.