medium · MCAT psych-soc
A researcher estimates the number of items a participant can hold in their working memory. The participant can recall 7 letters, or 7 three-letter words, or 7 short sentences. This consistency in the number of units held, regardless of unit complexity, supports the idea of:
- Long-term memory having infinite storage units
- Sensory memory as a high-capacity, brief duration store
- The superiority of phonological encoding over visual encoding
- Working memory capacity being limited by the number of 'slots' or chunks
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