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Cambridge IGCSE Psychology practice

Paper 1 structured question: T he features of an experiment.

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Attempt questionT he features of an experiment. revisionRevise the key idea

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T he features of an experiment.

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Paper 1Approaches, Issues and Debates1 marks

A researcher is conducting an experiment to test the effect of sleep deprivation on cognitive performance.

Description

Sleep Deprivation Study

The researcher has two groups: one that is sleep-deprived and one that is not. They measure cognitive performance using a standardized test.

  1. a

    Define extraneous variable

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 1 structured question: T he features of an experiment.

Paper 1Approaches, Issues and Debates4 marks

Description

Teaching Method Study

Factors such as prior knowledge, motivation, and classroom environment were considered as potential extraneous variables.

  1. a

    Explain how researchers can control extraneous variables in this study.

    Aim for approximately 4 distinct marking points.

    [4]