AQA GCSE Psychology · 8182
Paper 1
Revise: Testable HypothesesA null hypothesis predicts no difference between conditions or no relationship between variables. It allows for the possibility that the expected effect is absent.
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GCSE Psychology · key term
A testable statement predicting no difference between conditions or no relationship between variables.
Used by AQA and OCR
Paper 1
Revise: Testable HypothesesA null hypothesis predicts no difference between conditions or no relationship between variables. It allows for the possibility that the expected effect is absent.
Paper 1, Paper 2
A statement predicting no difference between conditions or groups, or no correlation between variables.
A null hypothesis predicts no difference or relationship, not the reverse direction of the alternative prediction.
A null hypothesis predicts no difference or no correlation; it does not predict a decrease or a negative correlation.
Keep the same variables and measurements when turning an alternative hypothesis into its matching null hypothesis.
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A null hypothesis predicts no difference or no correlation. It provides a contrasting prediction for the same investigation. The two hypotheses should refer to the same conditions, variables and measurements; what changes is whether a pattern is predicted.