Psychology Jacobs study

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  • Jacobs CAPACITY
    • Aim
      • To investigate how much info can be held in STM.
    • Procedure
      • Lab experiment using serial digit span technique
      • Participants given sequence of letters or digits followed by serial recall test.
      • Pace of items was half a second intervals through metronome.
      • Initial sequence was 3 items slowly increasing with 1 item until participant failed to say sequence correctly.
    • Independent Variable
      • The number of digits/letters they were shown
    • Dependent Variable
      • The number of digits/letters they could remember.
    • Conclusion
      • STM has limited capacity between 5 and 9 items.
    • Findings
      • Average digit span was 9.3
      • Average letter span was 7.3


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