CONTROLS

• TYPES OF CONTROLS?

  • randomisation
  • standardisation
  • random allocation
  • counterbalancing
• WHAT IS RANDOMISATION?

  use of chance to control the effects of bias when designing materials/ deciding order of conditions
• WHAT IS STANDARDISATION?

  using exactly same formalised procedure and instructions or all participants in a research study
• EXAMPLE OF STANDARDISATION?

  keeping participants in exact same conditions/ environment
• WHAT IS RANDOM ALLOCATION?

  attempt to control participant variables, ensuring each participant has same chance of being in one condition as another
• WHEN IS RANDOM ALLOCATION USED?

  independent groups design
• WHAT IS COUNTERBALANCING?

  attempt to control order effects, half participants experience conditions in one order and half in the opposite
• WHEN IS COUNTERBALANCING USED?

  repeated measures design
• TYPES OF EXPERIMENTAL DESIGNS?

  • repeated measures
  • independent groups
  • matched pairs
• REPEATED MEASURES DESIGN?

  all participants do all conditions
• INDEPENDENT GROUPS DESIGN?

  half participants do one condition, other half do another
• MATCHED PAIRS DESIGN?

  participants pretested for a characteristic and matched to another participant with similar characteristic, each pair divided (each do one of the conditions)
• WHAT DO SINGLE AND DOUBLE BLIND TRIALS MINIMISE THE EFFECTS OF?

  demand characteristics, investigator effects
• WHAT IS A SINGLE BLIND TRIAL?

  participant does not know which group they belong to
• WHAT IS A DOUBLE BLIND TRIAL?

  individual measuring participant's behaviour and participant do not know what group they belong to
• WHAT DOES DECEPTION CONTROL?

  social desirability
• HOW ARE DEMAND CHARACTERISTICS CONTROLLED?

  deception
• HOW ARE SITUATIONAL VARIABLES CONTROLLED?

  standardisation
• HOW ARE INVESTIGATOR EFFECTS CONTROLLED?

  double-blind trial
• HOW ARE PARTICIPANT VARIABLES CONTROLLED?

  repeated measures design/ matched pairs design
• HOW ARE ORDER EFFECTS CONTROLLED?

  counterbalancing