Edexcel A-Level Psychology 9PS0
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Cognitive Psychology
Demand characteristics and experimenter effects
- 3 things to know
- Papers 1 and 3
Overview
Recall questions on how participants work out the aim, the please-you effect, experimenter expectancy, and single- and double-blind procedures.
What you need to know
Answer each one before you reveal it.
What two problems does a double-blind procedure help reduce?
What is a single-blind procedure?
Questions from this subtopic
Each one with the model answer underneath.
- 1
What are experimenter effects?
Model answer
Ways in which the researcher's behaviour, characteristics, or expectations unintentionally influence participants' responses.
- 2
What are demand characteristics?
Model answer
Cues in the research situation that convey to participants the purpose of the study or what behaviour is expected, potentially causing them to alter their responses.
- 3
What three aspects are involved in control issues in experiments?
Model answer
Maintaining standardised procedures, controlling extraneous variables, and ensuring consistent conditions across all participants.
- 4
How does a single-blind procedure improve research?
Model answer
It helps reduce demand characteristics by preventing participants from knowing which condition they are in.
- 5
What two problems does a double-blind procedure help reduce?
Model answer
Demand characteristics and experimenter effects.
- 6
What is the please-you effect?
Model answer
When a participant works out the hypothesis and behaves so as to confirm it.
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