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TYPE OF EXPERIMENTS - Coggle Diagram
TYPE OF EXPERIMENTS
natural experiments
not necessarily a natural setting, could also be a lab
the researcher measures the effect of the IV on the DV. however, the researcher has no control over the IV and cannot change it.
:smiley: provides opportunities for research that may not have been undertaken for practical and ethical reasons
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:cry: naturally occurring so may happen very rarely, reducing the opportunities for research
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:cry: may be conducted in a lab so therefore would lack mundane realism and demand characteristics could be an issue
Laboratory experiments
:smiley: have high control over confounding and extraneous variables. this means that the researcher can ensure that effect on the dependent variable is likely to be down to manipulation of the iv
:smiley: replication is more possible than other experiments because of the high level of control. no new extraneous variables are introduced. replication is good to test validity
conducted in highly controlled environments, however its not always a lab.
:cry: Lack generalisability, lab experiments are artificial and not like everyday. ppts may behave in unusual ways and perform to demand characteristics
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field experiments
:smiley: have higher mundane realism than lab experiments because the environment is more natural. the behaviour they produce is more valid and authentic
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IV's are manipulated in a natural, everyday setting. the researcher goes to the ppts
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:cry: important ethical issues as ppts may be unaware they are being studied as they cannot consent so therefore research could be invasion in privacy
Quasi experiment
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:smiley: often carried out under controlled conditions and therefore share some strengths of lab experiments
the IV is based off an existing difference between people (age, gender). No one has manipulated it and the IV cannot change
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