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SERIAL POSITION EFFECT

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Presentation on theme: "SERIAL POSITION EFFECT"— Presentation transcript:

1 SERIAL POSITION EFFECT
1 Primacy effect 2 Recency effect 20 3 4

2 Serial position effect
Primacy effect = only a few words to focus on at beginning, so you are able to have time to put these in memory (are in LTM) Recency effect = last few words fresh in memory (are in STM) i.e., primacy effect measures LTM i.e., recency effect measures STM Modal model interpretation

3 Increase rate of presentation
If we sped up the word reading rate, what would happen? Primacy effect: should decrease because you have less time to work (put them in memory) on the words Recency effect: should be no effect (storage in STM based on number of items) In experiments, predictions hold

4 Put a delay after last word before recall
Predictions based on A-S Model Primacy effect: should not be affected because these items are in LTM Recency effect: should be diminished because items will be forgotten Actual experiment: supports predictions of A-S Model

5 Use recency to measure STM capacity
Generally, it is between 2 and 7 items in experiments

6 Encoding processes rehearsal (repetition)
Find meaning in items (meaningfulness) Relate items to each other (association)  there are a variety of processes for encoding (aka, control processes)

7 Retrieval processes E.g., serial search in STM Cases of search in LTM
Usually, fast and easy But sometimes, you consciously search your memory

8 TOT examples A professional mapmaker = cartographer
A rotating device used for stabilizing ships at sea = gyroscope Designed to induce a state where you know that you know the word, but you can’t recall the word at that moment (Tip-of-the-Tongue State, Brown & McNeil, 1966) Induces retrieval or search process

9 Typical search strategies in TOT state
Remember first letter but not the whole word Remember a sound of part of the word (what it sounds like) Try to visualize


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