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Cambridge IGCSE Psychology practice

Paper 1 structured question: Biological rhythms, natural cycles of bodily processes regulated by a person’s internal ‘clock’,

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Biological rhythms, natural cycles of bodily processes regulated by a person’s internal ‘clock’,

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Paper 1Approaches, Issues and Debates4 marks

The role of light in the sleep-wake cycle.

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Light and Sleep

Light is a significant exogenous cue that affects the sleep-wake cycle by regulating melatonin production. Increased light exposure during the day promotes alertness, while darkness signals the body to prepare for sleep.

  1. a

    Explain the role of light as an exogenous cue in regulating sleep patterns

    Aim for approximately 4 distinct marking points.

    [4]

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Paper 1 structured question: Biological rhythms, natural cycles of bodily processes regulated by a person’s internal ‘clock’,

Paper 1Approaches, Issues and Debates1 marks

Description

Influence of Exogenous Cues

Exogenous cues such as light and social interactions play a crucial role in regulating the sleep-wake cycle. Light exposure affects melatonin levels, while social interactions can influence when individuals feel sleepy or alert.

  1. a

    Define exogenous cues

    Aim for approximately 1 distinct marking point.

    [1]