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Personal Investigations and Novel Research Scenarios

Personal investigations: applying — Hypotheses and variables, Methodology and experimental design

  • 2 things to know
  • Component 2

Overview

Recall questions on applying — Hypotheses, variables, Methodology and experimental design.

What you need to know

Answer each one before you reveal it.

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Key term

What are the co-variables in your own correlational investigation, and how do they differ from an IV and DV?

Key term

What is the main problem with a repeated measures design in your own study, and how would you deal with it?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    Once your own investigation is complete, what should you be able to do with every stage of it?

    Model answer

    You should be able to state what you did and justify why, from the hypothesis and variables through to the sampling, analysis, reliability, validity and ethics.

  2. 2

    Why is it valuable to gain first-hand experience of two contrasting research methods rather than one?

    Model answer

    Because each method brings different strengths and problems, so experiencing two shows how the choice of method shapes the data obtained and the conclusions that can be drawn.

  3. 3

    What makes a hypothesis for your own investigation usable?

    Model answer

    It must name both variables in fully operationalised form, state precisely what is predicted, and be testable with the data you will actually collect.

  4. 4

    When should the hypothesis for your own study be directional?

    Model answer

    When previous research or theory gives a clear reason to expect the difference or relationship to go one particular way.

  5. 5

    What is the null hypothesis in your own investigation, and why must it be stated?

    Model answer

    It is the statement that there will be no difference or relationship beyond that expected by chance, and it must be stated because the inferential test decides whether it can be rejected.

  6. 6

    How would you operationalise the dependent variable in a memory investigation of your own?

    Model answer

    By defining exactly how it will be measured, for example as the number of words correctly recalled from a fixed list within two minutes.

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