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Principles of Research and Application of Research Methods

Deciding on a Research Question: aim of the research and null hypotheses

  • 3 things to know
  • AS Unit 2

Overview

Recall questions on aim of a piece of research, directional hypothesis and non-directional hypothesis.

What you need to know

Answer each one before you reveal it.

Your recallNot started
Key term

When is a non-directional hypothesis the safer choice?

Key term

What is the aim of a piece of research?

Key term

How does a hypothesis differ from an aim?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What is the aim of a piece of research?

    Model answer

    A general statement of what the researcher intends to investigate and why.

  2. 2

    How does a hypothesis differ from an aim?

    Model answer

    A hypothesis is a precise, testable prediction about the variables involved, whereas an aim is a broad statement of purpose.

  3. 3

    What does an alternative hypothesis predict?

    Model answer

    That there is a real difference between the conditions, or a real relationship between the co-variables, in the population being studied.

  4. 4

    When is an alternative hypothesis called an experimental hypothesis instead?

    Model answer

    When the study is a true experiment with a manipulated independent variable; in non-experimental work such as a correlation it stays an alternative hypothesis.

  5. 5

    What is a directional hypothesis?

    Model answer

    One that predicts which way the difference or relationship will go, such as stating that one group will score higher than the other.

  6. 6

    What is a non-directional hypothesis?

    Model answer

    One that predicts a difference or relationship will exist but does not state in which direction it will fall.

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