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What is a Hypothesis?
A precise, testable statement that predicts the outcome of a study
What is the difference between one and two tailed hypotheses?
- One tailed hypotheses are directional and suggest a specific outcome
- Two tailed hypotheses are non directional and state that there will be a difference in the results, but not what the outcome will be
When might one use a one tailed hypothesis?
When there has been previous research to suggest a likely outcome of the study
- To make a variable measurable
- For instance, memory could be operationalised into the number of words remembered
What is an experimental hypothesis?
A hypothesis pertaining to an experiment only
What is a research hypothesis?
A hypothesis pertaining to behaviour in general
What is a null hypothesis?
A precise, testable statement that predicts that there will be no significant difference between the two variables being studied