Psychology - Controlling Variables

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7 Terms

1
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How do you minimise demand characteristics

Single/double blind tests

Single = participants don’t know which condition (A or B) they are in

Double = Both researchers and participants don’t know which condition they’re in, which also eliminates investigator bias.

2
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How do you minimise extraneous variable in the environment (2)

Standardisation

Pilot study

3
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What are 4 main things that should be kept consistent in standardisation

Procedure

Environment

Instructions

Instructor

4
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What is the purpose of a pilot study

To test the study’s representiveness and identify design flaws

5
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How do you minimise order effects

Counterbalancing

6
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What are 3 examples of order effects

Fatigue

Boredom

Practise

7
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How does one enact counterbalancing and why should you (4)

  • Split pps into 2 groups

  • One group does condition A before B

  • One group does condition B before A

  • This reduces order effects by distributing them evenly across the experiment