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Principles of Research and Application of Research Methods

Application of Research Methods to a Novel Scenario (AS): judging the reliability, validity and ethics

  • 3 things to know
  • AS Unit 2

Overview

Recall questions on judging the reliability, validity and ethics.

What you need to know

Answer each one before you reveal it.

Your recallNot started
Study

Why should approval be obtained before any data are collected rather than afterwards?

Key term

Why does participants' awareness of being studied limit what research can establish?

Key term

State two reasons why psychological findings are harder to generalise than findings in the physical sciences.

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What should you look for in an unseen study that would threaten its internal validity?

    Model answer

    Any variable besides the independent variable that differs systematically between the conditions, or a measure that does not really capture the behaviour being claimed.

  2. 2

    Why is it a problem if the researcher who designed a study also scores the participants' responses?

    Model answer

    Their expectations can influence how borderline responses are scored, nudging the results towards the hypothesis.

  3. 3

    A questionnaire asks, “You do agree that mobile phones harm children, don't you?” What is wrong with it?

    Model answer

    It is a leading question that signals the expected answer, so the responses reflect the wording rather than what participants actually think.

  4. 4

    Why does participants' awareness of being studied limit what research can establish?

    Model answer

    People react to the research situation, look for cues and adjust their behaviour, so what is recorded may be a response to being studied rather than natural behaviour.

  5. 5

    State two reasons why psychological findings are harder to generalise than findings in the physical sciences.

    Model answer

    People differ from one another far more than physical materials do, and behaviour depends on the culture and the moment in time in which it is measured.

  6. 6

    Why do ethical limits restrict what psychologists can discover about some questions?

    Model answer

    Variables that would cause harm, such as severe deprivation, cannot be manipulated deliberately, so researchers must fall back on weaker naturally occurring or retrospective evidence.

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Psychology Past to Present — The Five Approaches
Contemporary Debates
Principles of Research and Application of Research Methods
Mathematical Requirements for Psychology (Appendix A: AS Unit 2 and A2 Unit 4)

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