Interference

Interference

Forgetting because one memory blocks another, one or both memories are distored or forgotten.

Mainly used as an explanation for forgetting in LTM.

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Proactive Interference

When a old memory affects a newer memory.

(the degree of forgetting is greater when the memories are more similar)

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Retroactive Interference

A newer memory affects an old memory.

(the degree of forgetting is greater when the memories are similar)

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key Study- McGeoch and McDonald.

Procedure- study of retroactive interference

  • Changed the amount of similarity of the control set of material and the set the ppts learn after.
  • ppts had to remember the control set 100% first

Sets of words: synonyms, atonyms, unrelated adjectives, numbers, nonsense syllables, no change

Findings-

when ppts recalled the original set, the better performance depended on the nature of the second set. Worst performance- synonyms

Conclusion-

This shows that interfernce is stronger when the memories are similar

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