The experimental method

• An independant variable is the thing we change
• A dependant variable is what we measure
• A hypothesis is the aim of the research or a testbaale prediction
• Controls are put in place to limit effects of confousing and extraneuos variables
• Confouding variables are variables that are not controlled by the researcher but are still included in the study
• EXtraneous variables are external factors that can affect the results of the experiment.
• 3 emelents to a hypotheses:

  relationship + dv + 2 levels of iv
• An alternative hypothise is when a prediction of what is going to happen is made(there are two types, directional, non-directional)
• A direcetional hypothesise states which way the experiement will go
• A non-directional hypothesise states there will be a difference but not which way
• The null hypothesis predicts no significant relationship between the independent variable and dependent variable
• Standardised procedures are used to ensure that all participants are exposed to the same stimulus and that all participants are exposed to the same procedure.
• Confounding variables are variables that are not controlled for in the experiment but affect the results