Bahrick et al Storyboard
By sjthorold, Updated
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In 1975, Bahrick et al conducted an experiment which aimed at testing the duration of Long Term Memory.
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To do this he obtained 392 American ex-high school students aged between 17 and 74.
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He then asked them to do 4 separate things: 1. Recall the names of as many former classmates as possible. 2. Do a photo recognition test 3. Do a name recognition test 4. Name and photo matching test
After the experiment Bahrick et al collected all of his evidence together and then performed some calculations.
He found that there was: 90% accuracy in face and name recognition after 34 years. 80% accuracy for name recognition after 48 years 40% accuracy for face recognition after 48 years 60% accuracy for free recall after 15 years 30% accuracy for free recall after 30 years.
After looking at his findings Bahrick et al concluded that classmates names are rarely forgotten (however sometimes cues were needed) and that facial recognition was more accurate than recall. Essentially he had found that LTM has a potential lifelong duration.
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