Experiments

• Lab experiments

  • Highly controlled artificial lab away from Ps everyday environment
  • IV manipulated by researcher, DV measured
  • Study of cause and effect involving 2 or more conditions
  • All extraneous variables aimed to be controlled while deliberate manipulation of IV
  • Random allocation of participants to conditions
  • High control of environment so standardised procedure used
• Field Exp

  • Natural setting to participants
  • IV manipulated by researcher, DV measured
  • Study of cause and effect including 2 or more conditions
  • Extraneous variables aimed to be controlled (hard as natural setting) while deliberate manipulation of IV
  • Random allocation of participants to conditions
  • Limited control but standardised procedure can be used
• Naturalistic Experiment

  • Not necessarily natural setting to participants
  • IV naturally occuring and DV measured
  • Study of cause and effect involving 2 or more conditions
  • Extraneous variables not controlled as no manipulation of variables
  • Ps naturally within conditions (not allocated by researcher)
  • No control so standardised procedure cannot be used