Duration Flashcards
What main study is associated with duration STM
Peterson and Peterson 1959
What was this study’s aim regarding STM
Investigate duration of STM
What was the participants regarding STM
24 phycology students
What where the conditions regarding STM
Changed the time until they had to recall information
What was the method regarding STM
- Used meaningless trigrams one at a time
- Used 3 second intervals where pttps counted down from random number until red light showed to prevent rehearsal.
- Recalled trigram
What where the findings regarding STM
After 3 seconds had 80% accuracy
After 6 seconds have 50% accuracy
After 18 seconds had >10% accuracy
What was the IV , control and DV regarding STM
Iv- Interval before recall
DV-Number of correctly recalled trigrams after 6 trails
Control- Random numbers, no two successive trigrams containing same letters, equal intervals.
What the conclusion regarding STM
STM has limited duration around 18 seconds
Rapidly loose information without rehearsal
What’s the strengths regarding STM
Controlled Lab study Scientific Controlled extraneous Variable Replicate
What’s the weaknesses regarding STM
Demand characteristics as phycology students may know the model
Small and unrepresentative sample
Artificial task so low ecological volatility
No Mundanrealsim
Distractions with counting so may not be reliable
What’s Duration
Length that memories can be held
What’s the duration of STM
18 seconds
What’s the duration of LTM
Potentially forever
