Research Issues

• What are Extraneous Variables?

  Nuisance variables that make it difficult to detect an effect. 
• What is a Confounding Variable?

  A variable that changes with the IV. A researcher can be unsure if the change in the DV is due to the IV or the CV. 
• What are Demand Characteristics?

  Where the participants change their behaviours in order to 'please' or 'screw' the researcher. 
• What are Investigator Effects?

  When the researcher consciously/unconsciously has an outcome on the research due to their behaviour. 
• What is Randomisation?

  Using chance in investigations as a control. 
• What is Standardisation?

  Using the same procedures on all participants, differences would become EVs.