lecture 5&6 - memory Flashcards
what are the types of memory?
sensory, STM, LTM
what is sensory memory?
initial stage, holds all incoming info for seconds
what is STM?
holds 5-7 items for 15-20 secs
what is LTM?
can hold a large amount of info or years or even decades
who investigated capacity of sensory memory?
sperling - average only remembered 4-5 letters
what did Sperling do to investigate capacity of sensory memory?
presented with an array of letters flashing quickly onto a screen and parts asked to report as many letters as possible
what were the methods in sperlings capacity of sensory memory experiment?
whole report, partial report and delayed partial report
what was the whole report method?
report as many as seen (4.5/12 letters)
what was the partial report method?
tone told them which row of letters to report (3.3/4 letters)
what was the delayed partial report method?
tone delayed for a fraction of a sec after the letters were extinguished (1/4 letters - performance decreases rapidly)
what was the result of Sperlings capacity of sensory memory?
The decrease in performance is due to the rapid decay of iconic memory
what is the modal model of memory?
input - sensory memory - STM - output or rehersal to - LTM
who developed the modal model of memory?
Atkinson and Shiffrin
what is the primary form of info lost from STM?
decay
what is implicit memory?
Occurs when learning from experience is not accompanied by conscious remembering of acquisition
