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Research methods: designs, sampling and ethics

Cambridge International paper 2: Research methods · Lesson 1 of 2

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Lesson 1 of 2 · Cambridge International paper 2: Research methods

Research methods: designs, sampling and ethics

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By the end you’ll be able to

Distinguish between experiments and non-experiments, including laboratory, field and natural experiments, and explain the features, uses, strengths and limitations of each.
Identify and apply research designs, including independent measures, repeated measures and matched pairs, and explain the problem of participant variables, order effects and relevant controls.

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Describe and select sampling techniques, including random, opportunity and volunteer sampling, and evaluate each in terms of bias, representativeness and practicality.

Explain and apply common data collection methods used in psychology, including self-report techniques, observations and correlational approaches, with reference to the type of data obtained and the practical demands of each method.

Assess ethical issues in psychological research, including informed consent, deception, protection of participants, confidentiality, right to withdraw and debriefing, and justify ways of dealing with ethical problems in the design of investigations.

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