research method

  • Created by: cieran32
  • Created on: 11-10-18 16:54
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  • Research method
    • Natural Experiments
      • weaknesses
        • causal relationship - because you don't manipulate the independent variables and because other variables could be having an effect, hard to establish
        • Ethics- deception is often used, making informed consent difficult. Also confidentiality my be compromised if community is identifiable
      • strengths
        • Ethical- it's possible to study variables that it would be unethical to manipulate
        • Ecological validity - less artificial
        • more likely to have normal behaviour
      • looks at the IV which isn't changed to see affect on DV PPS usually random allocated
    • Field Experiments
      • conducted outside the lab , behaviour is measured in a natural environment, a key variable is altered
      • Strengths
        • causal relationship- you can still establish causal relationship by manipulating the key variable and measuring its effect although is difficult in a field experiment
        • ecological validity - field experiments are less artificial than those done in a laboratory so relate to real life better
        • avoidance of demand characteristics
      • weaknesses
        • Less control- confounding variables may be more likely in a natural environment
        • Ethics- pps who didn't agree to take part might experience distress and often can'y be debriefed
    • Laboratory Experiments
      • aim is to control all relevant variables except for one key , altered variable is the independent variable
      • strengths
        • control- the effects of confounding variables are minimised
        • replication - strict controls mean you can runt the study again to check findings
        • causal relationship-ideally it's possible to establish whether one variable actually changes another
      • weaknesses
        • artificial -experiments might not measure real-life behaviour (may lack ecological validity)
        • demand characteristics- pps may respond according to the what they believe is being investigated
        • Ethics- deception is often used, making informed consent difficult
    • Quasi Experiment
      • strengths
        • control- quasi experiments are often carried out under controlled conditions
        • Ecological validity- the research is often less artificial then laboratory studies so you're more likely to be able to generalise the results to real life
      • in a quasi experiment the researcher isn't able to use random allocation  as the IV is often  a particular feature  (Gender)
      • lweknesses
        • PPS allocation- you cant randomly allocate PPS and confounding variables may affect results
        • causal relationship - it can be hard to establish cause and effect because independent variable isn't being directly manipulated

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