Control

• Demand Characteristics (DC) Impact on DV

  Cue that makes p unconsciously aware or workout what researcher expects resulting in change in natural behaviour.
• Demand Characteristics (DC) How it can be controlled

  •Use cover story=prevent discovering aim or withhold aspects of aim)

  •Single blind procedure

  •Independent groups or matched pairs
• Investigator Effects- Impact on DV

  Anything that investigator does to influence participants performance in study which can result in alterations to natural behaviour to fulfil investigators expectations (Direct: interaction with p) (Indirect: Investigator designing study)
• Investigator Effects- How it can be controlled

  •Use investigators who not aware of aim (double blind)

  •Randomly allocate p into groups

  •Standardised procedure
• Participant Variables- Impact on DV

  Individual difference between conditions e.g. Age, IQ, Gender
• Participant Variables- How it can be controlled

  •Conduct a pilot study to cosider if V will have impact on studys result

  •Random allocation

  •Matched pairs
• Situational Variable- Impact on DV

  Features of a research situation that may influence acts as EV  or confounding variables e.g. order effects
• Situational Variables- How it can be controlled

  •Standardised procedure