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Cambridge IGCSE Psychology practice

What is the independent variable in an experiment?

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Show answerT he features of an experiment. revisionRevise the key idea

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MCQ

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cambridge_mcq

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Topic

T he features of an experiment.

Exam-style question

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What is the independent variable in an experiment?.

  1. A.The variable that is measured
  2. B.The variable that is manipulated
  3. C.The variable that is constant
  4. D.The variable that is observed

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

Paper 1Approaches, Issues and Debates1 marks

Description

Study on Sleep and Performance

Participants are divided into three groups: one group sleeps for 4 hours, another for 6 hours, and the last for 8 hours. Their performance on a cognitive test is measured after each sleep duration.

Sleep Duration (hours)Cognitive Test Score
475
685
895
  1. a

    Define the independent variable in this study.

    Aim for approximately 1 distinct marking point.

    [1]