External validity Flashcards
What is external validity
being able to generalise the findings from an experiment to situations beyond the experiment
Is a study that is low in internal validity also low in external validity
Yes
What is ecological validity?
When we can generalise to different places or settings
What is population validity?
When we can generalise two different people or populations
What is temporal validity?
When we can generalise two different times
How is external validity enhanced?
through replication
Milgram’s experiment concerning delivering painful shocks in a lab were replicated – What did this show
That the initial conclusion was correct: situational factors affect obedience to unjust authority
What was the ‘holfling at al’ nurses in the real world study?
Nurses were telephoned by a Dr Smith and told to administer 20 mg of a drug - This Seriously convened hospital regulations Yet 95% complied
What was the defence Of the nurses in the ‘holfling at al’ real world study?
The nurses said they obeyed because that’s what doctors expect nurses to do
In the rank and Jacobson’s study in 1977 a similar study was conducted with nurses to the halfling et al study - again they were asked to carry out an irregular order.
89% refused
