types of experiement

• lab experiment 


  experiment that takes place in a controlled environment
• field experiment


  takes place in a natural setting- researcher manipulates the IV
• natural experiment


  completely natural
• quasi-experiment 


  study that is almost an experiment but lacks key ingredients
• lab experiment (strength) 


  high control over extraneous variables + replication is more possible
• lab experiment (weakness) 


  demand characteristics
• field experiments (weakness ) 


  ethical issues, if participants don't know they are being studied
• field experiment (strength) 


  higher mundane realism- experiment is more natural
• natural experiment (strength) 


  high external validity, real-life situations
• natural experiments (weakness)


  event may only occur rarely, reducing opportunities for research