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Slide 1

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Theory Of
Forgetting…read more

Slide 2

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What is it?
A theory that suggests that forgetting is caused by
an item getting in the way of another item.
Proactive Interference: When something learned
earlier interferes with current learning.
Retroactive Interference: When something learned
later gets in the way of something learned
previously.…read more

Slide 3

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You learn some Italian words and then some
French words.
If learning French stops you from remembering
the Italian words, then it's retroactive interference.
If your knowledge of Italian prevents you from
remembering the French words, then it's
proactive interference.…read more

Slide 4

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Evidence- Jenkins and Dallenbach, 1924
Hypothesis: What is learned later will interfere with what
ppts have already learned.
1. Ppts were given 10 nonsense syllables, such as `INJ' and
`BOH' to learn.
2. Some of the ppts carried on with their day as normal,
while the rest slept.
3. After intervals of 1,2,4 or 8 hours, the ppts were asked to
recall the words.…read more

Slide 5

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Recall was better if they'd been at sleep, because little information
was entering their heads, so there was nothing to cause retroactive
interference. However, for those who had carried on normally, the day'
s activities had caused interference.…read more

Slide 6

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IV: Sleep or no sleep during the interval.
DV: Number of words recalled.
There was a confounding variable:
In the sleep condition, the ppts' memory was tested in the
morning, whereas those who were awake were tested late in
the evening.
Hockey (1972) found out that recall was better in the morning.
This means that the findings can be explained in terms of the
time the testing took place rather than the lack of
interference during sleep.…read more

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