Flashcards
topic 24 - field and natural experiment
Cards in this deck (21)
- 1what are the three types of experiment?-lab
-field
-natural - 2what makes this similar to a lab experiment?experimenter directly controls IV and observes its effects on the DV
- 3what 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
- 4what happens in a natural experiment?IV isn't manipulated. DV can be tested in a lab.
- 5why are these necessary?to avoid ethical issues such as whether someone is adopted
- 6what are two strengths of a field experiment?-conducted in a more every day environment
-participants are often unaware - 7why does it help to be conducted in an everyday environment?greater ecological validity so can be applied better
- 8why does it help for participants to be unaware?increases mundane realism as participants aren't effected by experimenter effects, so behave more naturally
- 9what are two limitations of field experiments?-less control of extraneous variables
-more ethical issues - 10what 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
- 11why are there more ethical issues?usually, participants aren't asked for informed consent beforehand so they often cant be debriefed afterwards
- 12what 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 - 13why is it good to be able to do this research?allows us to study aspects of behaviour that couldn't usually be studied
- 14what is an example of studying 'real' problems?the effects of a disaster on health. this increases ecological validity of the approach
- 15what are two limitations of a natural experiment?-IV isn't directly manipulated by experimenter
-less control of extraneous variables - 16why 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
- 17what does lack of control over Extraneous variables lead to?low internal validity
- 18what makes results reliable?-if we repeat them under the exact same conditions and get the same results
- 19what is internal validity?the degree to which an observed effect was due to experimental manipulation rather than extraneous variables
- 20what 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 - 21what is mundane realism?an experiment with high mundane realism means it can be applied to everyday life
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- A-Level Psychology A2 (RESEARCH METHODS) Flashcards on topic 24 - field and natural experiment, created by Charlotte Hewson on 21/04/2015.
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- Charlotte Hewson
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