Experiment: it is a procedure carried out with the
goal of establishing the validity of a hypothesis
Observation: it is an act of noticing or perceiving
Differences: experiments are meant to researcher’s
response and it is the best way to say that the data is the best cause and
effect. Whereas observation is only to observe but it cannot give
manipulations.
Example for experiment: Finding out if playing video games with violent content
makes kids more prone to violent behavior. One might have children come into a
lab and have a certain number play a highly violent video game, another group
play a somewhat violent video game, and then a last group play a game with no
violence (called the control). one would then watch the kids play with other
children and record any violent behavior.
Example for observation
: you may ask parents how often
a child plays video games and whether they play ones with violent content. Then
you might have the children play in a controlled environment with other
children, a playground for example, then watch and record any violent behavior.
Source : http://ori.hhs.gov/education/products/sdsu/eg_exp.htm
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