experiments Flashcards
what are experiments
research situation where the researcher has a high degree of control
variables are identified and controlled
by manipulating the variables and observing what happens the researcher can discover cause and effect relationships
what are the two types of experiments
laboratory experiments- hypothesis is tested under controlled and created environment focusing on independent and dependent variables
field experiments - hypothesis is tested in the real world and those involved are usually unaware
what are the strengths of laboratory experiments
highly reliable - original experiment can specify precisely what steps were followed
can easily identify cause and effect relationships
liked by positivist for their scientific nature
what are the weaknesses of laboratory experiments
artificiality - its an artificial environment and its unlikely results can be transferred to the real world
Hawthorne effect- knowledge that you’re in an experiment can change ones behaviour
consent - they usually involve deception which means obtaining informed consent can be difficult or impossible
cost - very expensive to be able to create a controlled environment which reflects the complexities of society
what are the strengths of field experiments
less artificial than lab experiment’s because of that they have more ecological validity
people do not know that they are in an experiment meaning there wont be Hawthorne effect
liked by positivists for their scientific nature
what are the weaknesses of field experiments
less control over variables so they are not as scientific
have limited application as very few situations that can be adapted to become a field experiment
do not gain consent of those involved as this would change the behaviour
gate keepers may prevent the research from happening for example head teachers may not allow researchers into school