2554145
Descrição
FlashCards por Charlotte Hewson, atualizado more than 1 year ago
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Criado por Charlotte Hewson
mais de 9 anos atrás
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| Questão | Responda |
| what are the three types of experiment? | -lab -field -natural |
| what makes this similar to a lab experiment? | experimenter directly controls IV and observes its effects on the DV |
| what makes it different to a lab experiment? | DV is assessed in an environment that is more like every day life therefore less likely to be controlled |
| what happens in a natural experiment? | IV isn't manipulated. DV can be tested in a lab. |
| why are these necessary? | to avoid ethical issues such as whether someone is adopted |
| what are two strengths of a field experiment? | -conducted in a more every day environment -participants are often unaware |
| why does it help to be conducted in an everyday environment? | greater ecological validity so can be applied better |
| why does it help for participants to be unaware? | increases mundane realism as participants aren't effected by experimenter effects, so behave more naturally |
| what are two limitations of field experiments? | -less control of extraneous variables -more ethical issues |
| what does less control of extraneous variables lead to? | reduced internal validity as changes in the DV may not be caused by changes in the IV |
| why are there more ethical issues? | usually, participants aren't asked for informed consent beforehand so they often cant be debriefed afterwards |
| what are two strengths of natural experiments? | -allows research to be carried out where IV cant be manipulated for ethical or practical reasons -enables psychologists to study 'real' problems |
| why is it good to be able to do this research? | allows us to study aspects of behaviour that couldn't usually be studied |
| what is an example of studying 'real' problems? | the effects of a disaster on health. this increases ecological validity of the approach |
| what are two limitations of a natural experiment? | -IV isn't directly manipulated by experimenter -less control of extraneous variables |
| why is it bad to have no control over the IV? | cant claim IV has CAUSED a change in the DV, only that there is a CORRELATION |
| what does lack of control over Extraneous variables lead to? | low internal validity |
| what makes results reliable? | -if we repeat them under the exact same conditions and get the same results |
| what is internal validity? | the degree to which an observed effect was due to experimental manipulation rather than extraneous variables |
| what is external/ecological validity? | the extent to which research can be applied to the real environment. an experiment with high mundane realism means it can be applied to everyday life |
| what is mundane realism? | an experiment with high mundane realism means it can be applied to everyday life |
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