The Experimental Method

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  • The Experimental Method
    • Field Experiments
      • Take place in natural surroundings like a school/ workplace. This is a true experiment as the variables are controlled, and participants are randomly allocated to groups
      • Benefit: ecological validity is increased as the participants surroundings are more realistic
      • Drawback: reduce the level of control
    • Quasi Experiments
      • Lacks random allocation but is like a true experiment in other ways. For example, you can't be allocated in to a 'male' or 'female' group, you are already in them. Easy to mix up with lab experiments as they can take place in a laboratory and are very controlled.
      • Benefit: increases realism, useful when it's unethical to manipulate the IV
      • Drawback: less internal validity as participants are aware that they are being studied, must wait for IV to occur
    • Laboratory Experiments
      • Drawback: reduce level of ecological validity
      • Benefit: increase level of control
      • These take place in a lab and are called true experiments as the variables are controlled under investigation and participants are randomly allocated to grouos


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