Memory studies

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  • Memory studies
    • Coding
      • Short term memory
        • Baddely word list
          • list 1 had acoustically similar words
          • List 2 had acoustically disimilar words
          • List 3 had semantically similar words
          • list 4 had semantically disimilar words
          • Asked to do immediate recall. Participants made more acoustic errors
      • Long term memory
        • Baddely word list
          • Asked to do recall after interval task, made more semantic errors
    • Capacity
      • Short term memory
        • Jacob's digit span
          • Participants asked to recall a list of numbers which continues to increase
          • Average number of digits remembered was 7.3
          • Depending on how artificial the situation is
          • 7+-2
    • Duration
      • Short term memory
        • Peterson and Peterson Trigrams
          • Given a Trigram then asked to do an interval task (counting down from a 3 digit number)
            • Were asked to stop after a certain amount of time (3,6,9,12,15 seconds)
              • retention interval
          • Around 75& answered correctly when there was a 3 second retention interval
            • compared to after 18 seconds which was less than 25%
          • STM is limited when an interval task is completed
      • Long term memory
        • Bahrick's year book study
          • 329 Americans who either graduated 15, 30 or 48 years ago
          • Photo recognition
            • 15 years after graduation, 90% accurate
            • 48 years after graduating, 70% accurate
          • Name recognition
          • Free recall
            • 15 years, 60% accurate
            • 48 years, 30% accurate
        • Can last up to a lifetime

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