A2 AQA Research Methods Quiz

I used AQA maarkschemes, Psychology A2-The complete companion student book and http://www.simplypsychology.org/science-psychology.html

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1. What is a type 2 error?

  • Where the researcher accepts the null hypothesis (or rejects the research/alternative hypothesis) when in fact the effect isn't due to chance as the level of significance is too stringent
  • Where the researcher rejects the null hypothesis (or accepts the research/alternative hypothesis) when in fact the effect is due to chance as the level of significance isn't stringent enough
  • Where the researcher accepts the null hypothesis (or rejects the research/alternative hypothesis) when in fact the effect is due to chance as the level of significance isn't stringent enough
  • Where the researcher rejects the null hypothesis (or accepts the research/alternative hypothesis) when in fact the effect isn't due to chance as the level of significance is too stringent
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2. When should a Mann-Whitney test be used?

  • It's an independent groups design, at least ordinal data is collected and a test of difference
  • Its finding a correlation/relationship between 2 variables and its collecting at least ordinal data
  • It's a matched-pairs or repeated measures design, at least ordinal data has been collected and its a test of difference
  • It finds nominal data, its a test of difference and the categories are independent from one another

3. What is objectivity?

  • When all sources of bias are reduced and/or eliminated
  • Findings of a study can be replicated by other researchers at a different time

4. What is construct validity

  • Seeing how closely the measuring instrument relates to theoretical constructs
  • Ask an expert(s) in the field to assess the measuring instrument to see if they are an accurate measure of the subject
  • Taking another measuring instrument and measuring the same participants and comparing the 2 sets of scores/results and if they agree the measure has high validity

5. A directional hypothesis is also known as a..........

  • Two-tailed hypothesis
  • Operationalised hypothesis
  • One-tailed hypothesis
  • Null hypothesis

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