Experiment Flashcards
what are the 4 types of experiments
lab
field
natural
quasi
evaluation of lab experiments (causation)
by controlling all variables, researchers are able to establish cause and effect between manipulation in the IV and the difference in the DV due to standardisation
define lab experiment
an experiment that takes place in a controlled environment the researcher manipulates the IV and records the effect on the DV
define field experiment
an experiment that takes place in a natural setting to avoid artificiality. the researcher manipulates the IV and records the effect on the DV
evaluation of field experiments
People behave more naturally in their normal environment, making it more likely any behaviour observed can be applied to other natural settings
also likely to have mundane realism.
Field experiments lack control over extraneous variables that could influence the DV, therefore the ability to assume the IV had a direct influence on the DV Is reduced
define natural experiment
A study that uses a naturally occurring IV and the researcher measures the change in the DV
evaluation of natural experiments
Natural experiments are an example of real behaviour occurring in the real world, free of demand characteristics.
natural experiments are influenced by extraneous variables, and due to a lack of control over them, the study lacks replicability, thus reliability cant be tested
define quasi experiment
an experiment where the IV is naturally occurring and the DV is measured
evaluation of quasi experiments
they often involve real-world studies of pre existing characteristics instead of artificial laboratory settings
evaluation of quasi experiments (confounding variables)
there may be variables influences both the dependent variable and independent variable making it difficult to establish cause and effect
