Variables

• Independent variables are variables changed by the researcher
• Dependent variables are variables measured by the researcher
• Situational variables are related to the environment e.g. time of day
• Participant variables are related to the participants e.g. intelligence, age, gender
• Extraneous variables are any variables that can affect the relationship between IV and DV and are independent of the IV
• Confounding variables are variables that vary with the IV and cannot be controlled