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Area of Science:

  • Cognitive Psychology
  • Neuroscience

Background:

  • Mind-wandering is a common cognitive phenomenon.
  • Understanding the relationship between mind-wandering and arousal is crucial for cognitive science.

Purpose of the Study:

  • To investigate the association between arousal states and different types of mind-wandering.
  • To determine if pupillary responses can differentiate between on-task and mind-wandering states.

Main Methods:

  • Four experiments were conducted using a sustained attention task.
  • Pupil responses (tonic and phasic) were continuously recorded.
  • Thought probes were used to assess on-task and mind-wandering states.

Main Results:

  • Mind-wandering associated with lowered arousal (smaller pupil diameter) during focused external attention.
  • No significant difference in tonic pupil diameter between on-task and mind-wandering states during internal attention.
  • Mind blanking and mind-wandering dissociated based on attentional focus (external vs. internal).

Conclusions:

  • Mind-wandering is a heterogeneous construct with varying arousal associations.
  • Pupillary measures, combined with behavioral data, can track different mind-wandering states.
  • Arousal levels differ depending on the type of mind-wandering and attentional focus.