Examining mental simulations of uncertain events

Area of Science:

• Cognitive Psychology
• Psycholinguistics
• Language Comprehension

Background:

• Understanding events via language relies on mental simulations.
• The impact of contextual uncertainty on these simulations is under-researched.
• Cognitive effort during uncertain language processing needs further investigation.

Purpose of the Study:

• To investigate how contextual uncertainty influences mental representations of events.
• To examine the cognitive effort associated with processing uncertain linguistic information.
• To determine the role of processing time in resolving contextual uncertainty.

Main Methods:

• Participants read sentences with verbs introducing certainty (knows) or uncertainty (thinks).
• A delay (250 ms or 1,500 ms) followed sentence reading.
• Participants responded to visual stimuli (matching/mismatching images) to assess processing.

Main Results:

• A facilitation effect was observed for matching images.
• Interference effects (longer reaction times) occurred with uncertain verbs at a short interstimulus interval (ISI).
• This interference disappeared at a longer ISI, suggesting time is needed to resolve uncertainty.

Conclusions:

• Uncertainty in language necessitates additional time for constructing and mapping mental simulations.
• Cognitive effort increases when processing uncertain events, particularly with limited processing time.
• Findings shed light on mechanisms of representing possible events and perspective-taking in language.