Peterson and Peterson (1959)

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Peterson and Peterson (1959)

Advantages

  • Supports the Multi Store Model of Memory. They found that the longer the period of time between trigrams being presented and recall the less that was remembered
  • It has high internal validity. It was a lab experiment so there was a standardised procedure and a high level of control over the variables. This means it is easily replicable and the consistency of the data can be tested and extraneous variables have been minimised

Disadvantages

  • It has sample bias. Only 24 students were used which means that it is unrepresentative so it cannot be generalised to the wider population
  • It lacks ecological validity. It used an artificial environment and lacks realism. It was not representative of an everyday situation. Participants may not behave normally so their behaviour is unrepresentative so the results cannot be generalised

Evaluation

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