types of experiments Flashcards
what are the four types of experiments
Lab
field
natural
quasi
what happens to the IV in a lab experiment
researcher manipulates it - in control
whats the environment in a lab experiment
highly controlled
strengths of a lab experiment
more control over extraneous variables
high internal reliability and validity
replication is more possible
weaknesses of a lab experiment
may lack generalisability
low external validity and ppts may display unnatural behaviour
what happens to the IV of a field experiment
manipulated by the researcher
whats the environment of a field experiment
natural environment
strengths of a field experiment
high mundane realism + greater ecological validity
less demand characteristics
weaknesses of a field experiment
less control - impact internal validity
ethical issues as ppts don’t know they are taking part.
what is the IV in a natural experiment
naturally occurs - happens situationally
couldn’t do it artificially
what is the environment for a natural experiment
natural environment
strengths of a natural experiment
no demand characteristics
high external validity
allows opportunities for research which otherwise wouldn’t be possible
weaknesses of a natural experiment
opportunity to conduct research is rare
poor control of extraneous variables
what is the iv in a quasi experiment
naturally occurring / pre-existing differences
dispositional
whats the environment in a quasi experiment
either control or natural
