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Published on: May 19, 2015
Spontaneous mind-wandering thought content is less constrained than controlled stimulus-independent thought
Duncan M Cleveland1, Gary Lupyan1, Yuri B Saalmann2
1Department of Psychology, University of Wisconsin-Madison, USA.
Consciousness and Cognition
|August 3, 2026
Summary
This study reveals that the content of spontaneous mind-wandering differs significantly from controlled thoughts. Understanding these distinctions is key to comprehending internal thought processes.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Psychology
Background:
- Understanding internal thought processes necessitates distinguishing between controlled thoughts (stimulus-independent control) and spontaneous thoughts (mind-wandering).
- The difference in thought content based on varying levels of control remains an underexplored area.
Purpose of the Study:
- To investigate whether the content of thoughts differs between controlled and spontaneous states.
- To explore the characteristics of task-unrelated thought content in relation to control levels.
Main Methods:
- Participants engaged in a task designed to induce mind-wandering.
- Thought content was self-reported, categorized by generation source (external/self) and control level.
- Sentence embeddings were used to analyze thought content similarity and clustering.
Main Results:
- Task-unrelated thought content exhibited greater heterogeneity within individuals compared to other thought categories.
- Self-generated spontaneous thoughts were less similar to each other than self-generated controlled thoughts.
- Thought content naturally clustered by category, and spontaneous, self-generated thoughts correlated with mind-wandering measures.
Conclusions:
- Evidence suggests a meaningful distinction in thought content between stimulus-independent controlled thought and spontaneous mind-wandering.
- The findings highlight content differences as a key differentiator between these cognitive states.
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