Types Of Experiment

• What is a laboratory experiment?

  An experiment conducted in a controlled environment
• What is the main principle of a lab experiment?

  Full control over environmental factors
• What is the independent variable in a lab experiment?

  The factor that is changed between conditions
• Why do researchers control variables in a lab experiment?

  To measure the effect of the independent variable
• How might changing the color of light in a room affect an experiment?

  It could influence recall of numbers
• What is a strength of lab experiments regarding cause and effect?

  High control allows for confident cause and effect conclusions
• What is meant by high internal validity in lab experiments?

  The observed effect is due to the independent variable
• What is a disadvantage of lab experiments related to external validity?

  Lab conditions may not reflect real-world behavior
• What does lacking ecological validity mean?

  Results may not generalize to real-world settings
• What is mundane realism in the context of lab experiments?

  Tasks may not resemble real-world activities
• What are demand characteristics in research?

  Participants change behavior based on expectations
• What is a field experiment?

  An experiment conducted in a natural setting
• What is a strength of field experiments compared to lab experiments?

  Increased external validity from natural behavior
• What does increased mundane realism mean in field experiments?

  Tasks resemble real-world activities more closely
• Why are demand characteristics less of a problem in field experiments?

  Participants are often unaware they are being studied
• What are extraneous variables in field experiments?

  Variables that can affect the dependent variable
• What is a disadvantage of field experiments related to control?

  Lack of control over extraneous variables
• What is a natural experiment?

  The researcher measures changes in naturally occurring variables
• What is a strength of natural experiments regarding ethical concerns?

  They allow research in ethically sensitive areas
• Why do natural experiments have high external validity?

  Changes occur naturally in real life
• What is a disadvantage of natural experiments regarding control?

  No control over random assignment or extraneous variables
• What is a quasi experiment?

  An experiment without random assignment of participants
• What is a strength of quasi experiments?

  They allow study of existing groups
• What is a disadvantage of quasi experiments related to confounding variables?

  Differences beyond group membership may exist
• What are the strengths and weaknesses of each type of experiment discussed?

  Laboratory Experiments:

  • Strengths: High internal validity, replicable
  • Weaknesses: Low external validity, demand characteristics

  
  

  Field Experiments:

  • Strengths: High external validity, natural behavior
  • Weaknesses: Low control, extraneous variables

  
  

  Natural Experiments:

  • Strengths: Ethical research, high external validity
  • Weaknesses: No control over variables, rare situations

  
  

  Quasi Experiments:

  • Strengths: Study existing groups
  • Weaknesses: Confounding variables may exist
• Who conducted research on Romanian orphans?

  Rutter
• What is the significance of Rutter's research?

  It studied the effects of emotional deprivation
• What is a confounding variable?

  A variable that influences the dependent variable
• What resources are available for students on psych.com?

  Printable resources and tutorial videos
• What is the purpose of the tutorial videos mentioned?

  To provide examples and exam tips
• What is the support from patrons used for?

  To develop the research methods unit
• How does the support from patrons benefit the creator?

  Allows part-time teaching and content creation