Long-term Memory
Long-term Memory
Long-term Memory
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• Modal view of memory (qualitative differences<br />
between STM and LTM)<br />
– Capacity<br />
• STM around 7 chunks, LTM nearly unlimited<br />
– Duration<br />
• STM around 30 seconds, LTM can last a lifetime<br />
– Bahrick (1984) memory for Spanish class declined during first 6<br />
years, but there was no further forgetting even out to 35 years<br />
– Coding<br />
• STM is acoustic<br />
– confuse “b” and “g”<br />
• LTM is semantic<br />
– Baddeley (1966a) – 20 minutes after studying a list<br />
» poor recall for semantically similar lists (HUGE, BIG, SIZE,<br />
etc.)<br />
» normal recall from acoustically similar lists (MAD, MAP,<br />
MAN, etc.)
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