Experiments Flashcards
What is a natural/ quasi experiment?
An experiment where the experimenter doesn’t directly control the IV
What is a field experiment?
An experiment carried out in a natural environment
What is a lab experiment?
an experiment carried out in a controlled environment
What is experimenter bias?
when the experimenters expectations of study design can influence the results of the rudy they can subtly communicate their expectations to the participant
What is bias?
to show prejudice for or against someone or something unfairly
Demand characteristics
these occur when participants try to make sense or the study they find themselves in and adjust their behaviour accordingly, to please the experimenter or act differently
what is social desirability?
when a respondent gives an answer (in a self report) that is not necessarily true but gives it because the respondent wants to look good in front of others
observer biased
it’s possible that the presence of an observer may change the behaviour of those being observed especially when a small group is being studied
validity
a result which is relevant and accurate, the extent it which a test measures what it claims to measure
internal validity
how consistently a method measures within its self ( how accurate are the results )
face validity
did it measure what it was meant to
external validity
how consistently a method measures over time when repeated (can the results be generalised)
population validity
refers to the extent to which the findings can be generalised to other people uninvolved
ecological validity
whether a test or method measures behaviour that is representative of naturally occurring behaviour (true to life)
Reliability
if you repeat something will the same thing happen
