memory - explanations of forgetting: interference theory. Flashcards
What is meant by “proactive interference”?
Occurs when an older memory interferes with a newer one.
What is meant by “retroactive interference”?
Occurs when a newer memory interferes with an older one.
What are the two types of interference?
- proactive interference.
- retroactive interference.
What is an example of proactive interference?
Teacher has learned so many new names in the past she struggles with the names of her current classes.
What is an example of retroactive interference?
Teacher has learned so many new names this year this year that she has difficulty remembering the names of students last year.
What does the interference theory state?
- sometimes we forget as a result of interference.
- occurs when two pieces of information conflict with each other
↳ leads to one memory disrupting the ability to recall another. - interference is mainly said to be the cause of forgetting memories in the LTM.
- interference can make it difficult for us to access these memories although they are still in the LTM
↳ known as forgetting.
What experiment researches proactive interference?
Keppel and Underwood’s in 1962.
What was the aim of Keppel and Underwood’s proactive experiment?
Examine effect of proactive interference on LTM.
What is the procedure of Keppel and Underwood’s proactive experiment?
- presented with meaningless three-letter consonant trigrams such as THG at different intervals (3,6,9 seconds, etc).
- to prevent rehearsal participants had to count backwards in threes before recalling.
What are the findings of Keppel and Underwood’s proactive experiment?
Typically remembered trigrams that were presented first, irrespective of the interval length.
What is the conclusion of Keppel and Underwood’s proactive experiment?
Results suggest proactive interference occurred as memory for earlier consonants which had transferred to LTM was interfering with the memory for new consonants.
What experiments research retroactive interference?
Underwood and Postman’s in 1960.
What was the aim of Underwood and Postman’s retroactive experiment?
Examine effect of retroactive interference on LTM.
What is the procedure of Underwood and Postman’s retroactive experiment?
- lab experiment where participants were split into two groups.
- both groups had to remember a list of paired words such as cat and tree, jelly and moss, book and tractor.
- control group were not given second list.
- all participants were asked to recall words on the first list.
- control group were not given second list.
- both groups had to remember a list of paired words such as cat and tree, jelly and moss, book and tractor.
What are the findings of Underwood and Postman’s retroactive experiment?
Recall of control group was more accurate than that of the experimental group.
What is the conclusion of Underwood and Postman’s retroactive experiment?
Suggests that learning items in second list interfered with participants’ ability to recall the list.
What experiment researches the effect of similarity?
McGeoch and McDonald’s in (1931).