inability to recall or recognise something that has been previously learned
often explained in terms of trace decay-memory code in brain disappears
Define interference
An explanation for forgetting in terms of one memory disrupting the ability to recall another.
This is most likely to occur when the two memories have similarity.
Define Proactive interference
This is when previously learnt information interferes with the new information you are trying to store
e.g when someone asks for new address after recently moving and you give them your old address
Brenton Underwood (1957) looked at the impact of proactive interference.
He analysed the findings from a number of studies and concluded that when participants had to learn a series of word lists, they do less well on word lists encountered later on. They remember more of the lists encountered early on.
Overall he found..
he found that is ppts learn 10 or more lists, after 24 hours they remembered about 20% of everything they had learned. If they had only learned one list initially, then recall was over 70%.
Define Retroactive Interference
This is when newlylearnt information gets mixed up with the old information
e.g after recently moving you are asked to recall old address and give new one
Muller was the first to identify retroactive interference
They gave participants a list of nonsense syllables to learn for 6minutes.
They were then asked to recall the words after a retention interval.
Performance was less good
if the participants had to do another task between the initial learning and recall. They were shown 3landscape paintings and asked to describe them.