Lesson 3.1.4.1.1
3.1.4.1.1 Null and alternative hypotheses Quiz: AQA Psychology, Unit 4
20 questions
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Lesson 3.1.4.1.1, Null and alternative hypotheses: 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
-
What does a null hypothesis predict between two variables in an experiment?
- Significant difference
- Positive correlation
- Directional effect
- No difference
-
What does an alternative hypothesis predict between variables being tested?
- No difference
- No relationship
- An error
- A difference
-
What type of hypothesis predicts the specific direction of a research outcome?
- Directional hypothesis
- Null hypothesis
- Uncontrolled hypothesis
- Non-directional hypothesis
-
What type of hypothesis states there will be a difference without predicting direction?
- One-tailed hypothesis
- Directional hypothesis
- Non-directional hypothesis
- Null hypothesis
-
Which word is essential when writing a standard null hypothesis statement?
- Difference
- Increase
- Decrease
- No
-
Why do psychologists state a null hypothesis before conducting research?
- To operationalise variables
- To select participants
- To prove theories
- To test chance
-
What is the null hypothesis for a study investigating sleep and test scores?
- No effect
- Strong correlation
- Negative effect
- Positive effect
-
To make a hypothesis testable, what must be done to the variables?
- Standardised
- Operationalised
- Randomised
- Counterbalanced
-
Why is a subjective opinion unusable as a psychological hypothesis?
- Cannot be spoken
- Cannot be written
- Cannot be measured
- Cannot be remembered
-
What type of hypothesis predicts the specific direction of the results?
- Directional hypothesis
- Non-directional hypothesis
- Null hypothesis
- Correlational hypothesis
-
If results match the researcher's prediction of a difference, which hypothesis is supported?
- False hypothesis
- Correlational hypothesis
- Null hypothesis
- Alternative hypothesis
-
What does a null hypothesis always predict between experimental conditions?
- Strong correlation
- Directional change
- No difference
- Significant difference
-
What must be clearly defined in a hypothesis to make it testable?
- Unmeasurable aims
- Abstract concepts
- Operationalised variables
- Subjective feelings
-
What happens to the null hypothesis when an experiment finds a significant effect?
- It is modified
- It is rejected
- It is accepted
- It is proven
-
Which element is included in both a null and an alternative hypothesis?
- Expected outcome
- Predicted direction
- Sample size
- Variables tested
-
What process turns abstract variables into clearly measurable, specific terms?
- Randomisation
- Standardisation
- Counterbalancing
- Operationalisation
-
What type of hypothesis states that praise will increase puzzle performance?
- Directional hypothesis
- Unidirectional variable
- Null hypothesis
- Non-directional hypothesis
-
Why must psychological researchers formulate a hypothesis before data collection?
- To save money
- To gain funding
- To prevent bias
- To speed testing
-
What serves as the default baseline prediction of no effect in research?
- Null hypothesis
- Directional hypothesis
- Research aim
- Alternative hypothesis
-
What is the null hypothesis for a study comparing two sleep durations?
- Fewer errors
- No difference
- Increased sleep
- More errors
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