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Types of Experiments - Coggle Diagram

- - - - have control over extraneous variables
        
        the effect on the DV is the direct result of the IV
      - high validity
      - no new extraneous variable when the experiment is being repeated
        
        makes sure the findings are valid
    - - lack generalisability
        
        artificial
        
        unlike everyday life
        
        low external validity
      - participants not in their natural environment causing unnatural behaviours
      - low mundane realism
        
        some tasks they may not normally do
- - - - controlled conditions it can avoid extraneous variables
      - higher ecological validity
      - useful when it's unethical to manipulate the IV
    - - can't randomly allocate participants
        
        may be confounding variables
      - lack of control over environment may have extraneous variables
      - not repeatable
        
        unable to verify past results
      - IV can't be claimed to cause the change since it is not manipulated by the researcher
- - - - results are more valid
        
        IV is not manipulated by the researcher
      - creates experimental opportunities that would be able to be recreated because of ethical or pratical reasons
    - - naturally occurring events may only happen rarely
      - participants may not be randomly allocated
      - if done in a lab it lowers the validity
- - - - high generalisablility
      - participants unaware
        
        increase external validity
    - - less control of confounding and extraneous variables
      - ethical issues
        
        participant has not given consent and it is an invasion of their privacy