AO3 - Duration

• What is the focus of the evaluation discussed?

  Duration
• Which study is noted for having high external validity?

  Bahrick et al (1975)
• Which study is noted for having low external validity?

  Peterson and Peterson
• What is a limitation mentioned regarding the studies' control?

  There were low levels of control
• What variables may have affected recall in the studies?

  Rehearsal and popularity
• What does the term "displacement" refer to in this context?

  Information may be replaced by new input
• How might the counting task in Peterson and Peterson's study affect recall?

  Letters may be displaced by the counting
• What is a potential reason for forgetting in Peterson and Peterson's study?

  Displacement of letters during counting