AO1 - Duration

• Who conducted the key research on duration in 1975?

  Bahrick
• What was the accuracy of photo recognition after 15 years?

  90% accuracy
• How did the length of time impact recall success in Bahrick's study?

  Longer time decreased recall accuracy
• What was the accuracy of free recall after 48 years?

  30% accuracy
• What was the accuracy of photo recognition after 48 years?

  70% accuracy
• What was the variable time period participants counted back for?

  3 to 18 seconds
• What is the term used for the time period participants counted back?

  Retention interval
• How did recall accuracy change from 3 seconds to 18 seconds in Peterson and Peterson's study?

  From 80% to 3% accuracy
• What was the recall accuracy after 3 seconds in Peterson and Peterson's study?

  80% accuracy
• What age range did Bahrick's study participants fall into?

  17 to 74 years old
• What method was used to test recall in Bahrick's study?

  Yearbook recall
• What type of recall test did participants perform in Bahrick's study?

  Free recall and photo recognition
• What was the accuracy of free recall after 15 years?

  60% accuracy
• What task did participants perform while trying to remember the trigram?

  Count back from a 3-digit number
• What was the recall accuracy after 18 seconds in Peterson and Peterson's study?

  3% accuracy
• What did Peterson and Peterson (1959) ask participants to remember?

  A trigram (three letters)