Experimental method

• Independent variable is the variable we change / manipulate
• The dependent variable is what we measure
• A aim is a general statement of what the researcher intends to investigate. This is the purpose of the study.
• A hypothesis is a clear, precise, testable statement about the relationship between variables. Hypotheses can be directional or non-directional.
• A directional hypothesis (one-tailed) predicts the specific direction of the relationship or effect.
• A non-directional hypothesis (two-tailed) predicts there will be a difference or relationship but does not specify the direction.
• Operationalisation is when a variable is clearly defined in terms of how it can be measured.