Mapa mental
Research on memory
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Research on memory
Duration
- STM
- Peterson and Peterson
- 24 students and the trigram test e.g. THX 512 and they were asked to recall the consonant syllable after a retention interval of 3, 6, 9 seconds etc.
- PPS had 90% accuracy after 3 sec, 20% at 9 secs and 2% after 18 secs. Suggesting that STM has a very short duration less than 18 seconds
- LACKS ECOLOGICAL VALIDITY- as stimulus material was artificial
- The findings may be explained by displacement rather than the material only lasting a short time in STM (spontaneous decay) as counting numbers in their STM that displaced the syllables
- PPS had 90% accuracy after 3 sec, 20% at 9 secs and 2% after 18 secs. Suggesting that STM has a very short duration less than 18 seconds
- 24 students and the trigram test e.g. THX 512 and they were asked to recall the consonant syllable after a retention interval of 3, 6, 9 seconds etc.
- Peterson and Peterson
- LTM
- Bahrick et al
- 400 people at various ages were tested in a school year book experiment and were asked to recall the names of people in their graduating class.
- PPs tested with 15 years of graduation =90% accuracy, 48 years declined to 70% and free recall was about 60% at 15 years and 30% after 48 years.
- has more Ecological validity than the first study
- PPs tested with 15 years of graduation =90% accuracy, 48 years declined to 70% and free recall was about 60% at 15 years and 30% after 48 years.
- 400 people at various ages were tested in a school year book experiment and were asked to recall the names of people in their graduating class.
- Bahrick et al
- STM
Capacity
- Jacobs digit span
- Making PPs listen to a set of numbers and then recall them if they go it right and the number of numbers would increase each time.
- mean span for digits was 9.3 items and for letters was 7.3
- Making PPs listen to a set of numbers and then recall them if they go it right and the number of numbers would increase each time.
- Miller
- Meta-analysis and writing an article about STM capacity
- Lead onto miller finding out that the capacity of the STM is 7 +/- 2
- however as miller may have over-estimated the capacity if the STM Cowan reviewed research on the topic and found the STM capacity is more likley to be about 4 chunks rather than 7
- Lead onto miller finding out that the capacity of the STM is 7 +/- 2
- Meta-analysis and writing an article about STM capacity
- Jacobs digit span
Encoding
- Baddeley
- Acoustically similar/dissimilar groups and semantically similar/dissimilar groups
- Each given trial of 5 words and after an interval they were asked to identify the correct 5 words and place them in order out of 10 given
- Results for STM had acoustically dissimilar words as lowest recall. Suggesting STM are encoded acoustically
- When LTM was tested (interval of 20 mins) groups with semantically dissimilar words had the lowest recall. Suggesting LTM encodes words semantically
- Too short of an interval and not being completely representing the LTM
- Not ecologically Valid, thus reducing generalisability
- When LTM was tested (interval of 20 mins) groups with semantically dissimilar words had the lowest recall. Suggesting LTM encodes words semantically
- Results for STM had acoustically dissimilar words as lowest recall. Suggesting STM are encoded acoustically
- Each given trial of 5 words and after an interval they were asked to identify the correct 5 words and place them in order out of 10 given
- Acoustically similar/dissimilar groups and semantically similar/dissimilar groups
- Baddeley
Información
- Descripción
- A-Level Psychology Mapa Mental sobre Research on memory, creado por 09akodun el 29/03/2016.
- Creado por
- 09akodun
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