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
- weaknesses
- 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
- strengths
- Natural Experiments
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