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Evaluating and Validating Research

Validity: Ways of dealing with issues of validity

  • 3 things to know
  • Component 2

Overview

Recall questions on Validity: Ways of dealing with issues of validity.

What you need to know

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Key term

State three ways of improving the internal validity of an experiment.

Key term

Define concurrent validity.

Key term

What correlation is normally required for acceptable concurrent validity?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    State two ways of reducing social desirability bias.

    Model answer

    Guaranteeing anonymity and confidentiality makes honesty less costly, and a lie scale can be built into a questionnaire to detect participants who are answering to look good.

  2. 2

    Define face validity and state how it is assessed.

    Model answer

    Face validity is whether a measure looks on the surface as though it measures what it claims, and it is assessed simply by inspecting the items.

  3. 3

    Define content validity and state how it is assessed.

    Model answer

    Content validity is whether the measure covers the full range of the concept it is supposed to measure, and it is assessed by experts in the field judging the coverage of the items.

  4. 4

    Define concurrent validity.

    Model answer

    Concurrent validity is established by correlating scores on a new measure with those from an existing, well-established measure of the same thing, taken at about the same time.

  5. 5

    What correlation is normally required for acceptable concurrent validity?

    Model answer

    A correlation of +0.80 or above is normally taken as acceptable.

  6. 6

    Define predictive validity and give an example.

    Model answer

    Predictive validity is whether scores on a measure successfully forecast a future outcome, such as an aptitude test predicting later job performance.

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