Reserach On Capacity Flashcards
Capacity
Refers to ‘the amount of information that can be held in a memory store’
Digit Span
Joseph Jacobs (1887)
What did Joseph Jacobs find was the mean span for digits across all participants?
9.3 items
Span of memory and chunking
George Miller (1956)
George Miller
Made the observation that in everyday practice lots of things come in groups of 7.
Miller thought that the capacity of STM is about 7 items plus/minus 2.
He also claimed that people can recall 5 words as easily as they can recall 5 letters.
This is because we group sets of digits or letters into units r chunks. Known as chunking.
Bopp and Verhaeghan (2005)
They confirmed Jacobs’ findings findings by doing a better controlled study.