Lesson 3.1.4.2.1
3.1.4.2.1 Independent, dependent and extraneous variables Quiz: AQA Psychology, Unit 4
20 questions
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Lesson 3.1.4.2.1, Independent, dependent and extraneous variables: 20 multiple choice questions for the AQA GCSE Psychology (8182), Unit 4: Research methods, written with Revision Ninja.
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The 20 questions
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Which variable is deliberately manipulated or changed by the researcher in an experiment?
- Independent variable
- Extraneous variable
- Confounding variable
- Dependent variable
-
Which variable is measured by the researcher to assess the effect of manipulation?
- Dependent variable
- Extraneous variable
- Independent variable
- Control variable
-
In a study testing the effect of caffeine on reaction time, what is the independent variable?
- Reaction time
- Participant age
- Caffeine dose
- Test score
-
In a study testing the effect of caffeine on reaction time, what is the dependent variable?
- Room temperature
- Coffee brand
- Reaction time
- Caffeine dose
-
Which of the following is an example of an extraneous variable in a memory test?
- Test score
- Background noise
- Words recalled
- Study condition
-
What is the primary reason for controlling extraneous variables in an experiment?
- To increase sample
- To alter DV
- To isolate IV
- To remove bias
-
Keeping room temperature constant for all participants in a study is an example of what?
- Manipulating the IV
- Controlling a variable
- Measuring the DV
- Sampling participants
-
Which term describes the variable that is directly manipulated by the experimenter?
- Control variable
- Extraneous variable
- Dependent variable
- Independent variable
-
In a study testing if background music affects recall, what is the independent variable?
- Participant age
- Recall score
- Presence of music
- Number of words
-
In a study on revision methods and test scores, which factor is an extraneous variable?
- Participant tiredness
- Exam grade
- Revision method
- Final test score
-
If one group tests in a noisy hall and another in silence, what variable is noise?
- Controlled variable
- Dependent variable
- Extraneous variable
- Independent variable
-
Which variable is measured, not manipulated?
- The dependent variable
- The controlled variable
- The experimental condition
- The independent variable
-
Using identical test papers for every participant in a study controls which variable type?
- Participant variable
- Extraneous variable
- Independent variable
- Dependent variable
-
What happens to research findings if extraneous variables remain uncontrolled?
- Validity increases
- Results are distorted
- DV is fixed
- IV is changed
-
When comparing two teaching methods, what variable type is teacher experience level?
- Extraneous variable
- Independent variable
- Controlled variable
- Dependent variable
-
Which of the following represents an operationalised dependent variable?
- Number of words
- Memory ability
- Participant mood
- Intelligence level
-
If a researcher directly changes the hours of sleep participants receive, what variable is sleep?
- Dependent variable
- Independent variable
- Extraneous variable
- Control variable
-
Why do researchers ensure that all participants are tested at the same time of day?
- Measure dependent variable
- Select sample group
- Control extraneous variables
- Manipulate independent variable
-
A study changes the colour of a poster to see whether it affects attention. What is the colour of the poster?
- An extraneous variable
- The dependent variable
- The null hypothesis
- The independent variable
-
Which variable is actively manipulated by the researcher in an experiment?
- Extraneous variable
- Dependent variable
- Independent variable
- Confounding variable
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