Describe Waugh and Norman’s model of memory
Describe Waugh and Norman’s model of memory The first modern behavioural model to travel down memory
lane, and one whose concept of primary memory has served as a departure point
for several modern theories, was developed by Waugh and Norman (c1965). the
thought is dualistic; primary memory (PM), a short-term storage system, is
conceptualised as being independent of secondary memory (SM), a longer-term
storage system. Describe Waugh and Norman’s model of memory Waugh and Norman borrowed freely from William James’s dichotomy
of primary and secondary memory and illustrated their theory by means of the
model shown in Figure below, which encouraged the memory metaphor of boxes
within the top that soon proliferated within the literature of psychology .
What Waugh and Norman did that James never attempted was to quantify properties
of primary memory.
This short-term storage system was taken to possess very limited capacity, so as that loss of knowledge from it had been postulated to occur not as a simple function of some time but (once the storage capacity was exhausted) by displacement of old items by new ones. PM could be conceptualised as a storage compartment very almost like a file , during which information is stored during a slot or, if all the slots are filled, displaces an item occupying one of the slots.
Describe Waugh and Norman’s model of memory Waugh and Norman traced the fate of things in PM (primary memory) by using lists of sixteen digits, that were read to subjects at the speed of 1 digit per second or four digits per second. the aim of presenting digits every second or quarter second was to figure out whether forgetting was a function of decay (presumed to be due to time) or interference in PM.
If forgetting was a function of decay, then less recall could
be expected with the slower rate (one digit per second); if forgetting was a
function of interference in PM, then no difference in recall could be expected
according to the presentation rate. the same amount of knowledge is presented
at both presentation rates, which, by Waugh and Norman’s logic, allows the same
time for decay to occur. Describe Waugh and Norman’s model of memory it would be argued that even at one item per second,
subjects would allow extra experimental information to enter their PM, but
later experimentation (Norman, 1966) during which presentation rates varied from
one to 10 digits (for a given period), yielded data consistent with a rate of
forgetting expected from the primary model.
The rate of forgetting for the two presentation rates is
analogous . Interference seems to be a greater factor than decay in forgetting
in PM.
Waugh and Norman’s system makes sense . Describe Waugh and Norman’s model of memory PM holds verbal
information and is out there for verbatim recall; this is often often true in
our ordinary conversation. we'll recall that last a neighborhood of a sentence
we've just heard with complete accuracy, albeit we were barely taking note of
what was said. Describe Waugh and Norman’s model of memory However, to recall the same information sometime later is
impossible unless we rehearse it, which makes it available through SM.
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