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Core Studies: Cognitive Area

Loftus and Palmer (1974) eyewitness testimony: background and the first experiment

  • 3 things to know
  • Component 02

Overview

Recall questions on the aims of Loftus and Palmer's 1974 eyewitness testimony research, reconstructive memory, the method, sample and film clips of the first experiment, the critical question and its five verbs, mean speed estimates and possible explanations.

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Answer each one before you reveal it.

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Key term

Give the mean speed estimates produced by the five verbs in the first experiment.

Key term

What did the films of staged crashes reveal about people's ability to judge speed?

Who and when

Why did Loftus and Palmer think the wording of questions mattered outside the laboratory?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What was the overall aim of Loftus and Palmer's research into eyewitness testimony?

    Model answer

    To investigate whether the wording of a question asked after an event distorts a witness's memory of it, in particular their estimate of how fast a car was travelling.

  2. 2

    Which account of how memory works does this research support?

    Model answer

    It supports the reconstructive account, in which recall is rebuilt from stored fragments combined with later information rather than replayed intact.

  3. 3

    Why did Loftus and Palmer think the wording of questions mattered outside the laboratory?

    Model answer

    Police and courtroom questioning routinely uses questions that contain implied information, so any distortion caused by wording would affect real testimony and possibly verdicts.

  4. 4

    What method and design were used in the first experiment?

    Model answer

    It was a laboratory experiment using an independent measures design, with each participant placed in only one verb condition.

  5. 5

    Who took part in the first experiment?

    Model answer

    Forty-five students at an American university, who were tested in groups.

  6. 6

    What materials were shown to participants in the first experiment?

    Model answer

    Seven short film clips of traffic accidents taken from driver-safety training films, each lasting between 5 and 30 seconds.

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