EVALUATION

• STRENGTHS OF A QUASI EXPERIMENT?

  • high control over extraneous variables
  • cause and effect can be established
  • practical
  • ethical
• WHY ARE QUASI EXPERIMENTS PRACTICAL?

  no pre-screening or random allocation is required
• WHY ARE QUASI EXPERIMENTS ETHICAL?

  investigates innate characteristics
• WEAKNESSES OF QUASI EXPERIMENTS?

  • low control over participant variables
  • difficult to establish cause and effect
  • usually artificial
• WHY IS THERE A LOW CONTROL OVER PARTICIPANT VARIABLES IN QUASI EXPERIMENTS?

  no random allocation
• WHY IS IT DIFFICULT TO ESTABLISH CAUSE AND EFFECT IN QUASI EXPERIMENTS?

  IV not deliberately changed
• WHAT IS THE ISSUE WITH QUASI EXPERIMENTS USUALLY BEING ARTIFICIAL?

  low ecological validity