Aim: An intention of investigation
Hypothesis: A predictive, operationalised statements of expected outcome
Null hypothesis: Predicts IV has no effect on DV
Alternative hypothesis: Predicts that there will be a significant effect on DV because of the IV
- Directional (one tailed) = specific about effect that IV will have on DV – should be used when there is sufficient background evidence or previous research.
- Non-directional (two-tailed) = Say IV will affect DV but not specific about how this will be – should be used if evidence is unclear, no previous research has been done or the research wants to avoid bias.