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Dreaming and waking: similarities and differences revisited.
Tracey L Kahan1, Stephen P LaBerge
1Department of Psychology, Santa Clara University, Santa Clara, CA 95053, United States. tkahan@scu.edu
Consciousness and Cognition
|October 12, 2010
Summary
Dreaming experiences share cognitive and sensory qualities with waking experiences, challenging the notion that dreaming lacks high-order cognitive skills. Both states exhibit similar processes, though dreams differ in reality orientation and logical structure.
Area of Science:
- Cognitive Neuroscience
- Sleep Research
- Psychology
Background:
- Dreaming is often perceived as lacking high-order cognitive (HOC) skills.
- This study investigates the hypothesis that the dreaming mind is highly similar to the waking mind.
Purpose of the Study:
- To test the similarity between dreaming and waking cognitive and sensory experiences.
- To analyze process and structural features of dream content compared to waking experiences.
Main Methods:
- Two studies employed multiple experience sampling from REM sleep and waking states.
- A systematic protocol, detailed in Kahan (2001), was followed for data collection.
Main Results:
- Dreaming and waking experiences showed surprising similarity in cognitive and sensory qualities.
- Significant differences were observed in reality orientation and logical organization (e.g., bizarreness, typicality).
- Process features of dreaming and waking were more similar than structural features.
Conclusions:
- The dreaming mind exhibits significant similarities to the waking mind in terms of cognitive and sensory qualities.
- While processes align, dreams diverge structurally, particularly in reality and logic.
- Findings support a more integrated view of waking and dreaming cognition.
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