Cambridge IGCSE Psychology practice

Paper 1 structured question: Population defined as a group of people with one or more characteristics in common, from

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Paper

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Topic

Population defined as a group of people with one or more characteristics in common, from

Exam-style question

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Paper 1Approaches, Issues and Debates1 marks

A researcher is conducting a study on student stress levels.

Description

The researcher decides to survey students in a university library, selecting those who are present at the time of the study.

a
Define opportunity sampling.
Your answer
Aim for approximately 1 distinct marking point.
[1]

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Paper 1Approaches, Issues and Debates3 marks

Description

The psychologist posts an advertisement inviting teachers to volunteer for the study.

a
Explain the potential bias in volunteer sampling.
Your answer
Aim for approximately 3 distinct marking points.
[3]