types of experimental designs
- Created by: gracemae31
- Created on: 26-04-21 14:09
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- types of experiments (experimental design)
- lab
- carried out in well controlled environments
- researcher manipulates IV and randomly allocates pp to conditions
- advantages
- easy replication
- control extraneous variables
- can be checked for reliability
- cause and effect can be assumed as IV been manipulated to see effect on DV
- disadvantages
- low ecological validity
- cannot generalise to RL
- artificial settings affect pp behaviour
- demand characteristics
- low ecological validity
- carried out in well controlled environments
- field
- experiments carried out in more natural setting but IV still manipulated by experimenter
- advantages
- high ecological validity
- more natural environment
- less likely to get demand characteristics as don't know being studied
- more natural environment
- high ecological validity
- disadvantages
- difficult to replicate
- difficult to control extraneous variables as more natural setting
- could break ethical issues of informed consent and deception
- natural
- still an IV and DV but experimenter takes advantage of natural changes occurring
- advantages
- High ecological validity as real life occurrences
- can be used when other research is unethical
- disadvantages
- can't fully control what's being tested as IV is difficult to control
- difficult to replicate
- quasi
- has an IV but not free to be manipulated by experimenter
- advantages
- less articial than lab so more likely to generalise to RL
- disadvantages
- random allocation of pp not possible= confounding variables affect results
- hard to establish cause and effect
- lab
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