Reliability Flashcards
Why do you need reliability?
In order to trust the results.
What are the two types of reliability?
Internal and external.
What is internal reliability?
The extent to which a measure is consistent within itself.
What is external reliability?
The extent to which a measure varies from one use to another.
How can you assess reliability in experimental research e.g. lab studies?
Test-Retest.
Test some pots using same design after a while
How can you assess reliability when doing observations?
Inter-rater reliability.
How can you assess reliability when doing questionaires?
Split-half method.
How many times should you do an experimental research experiment to asses reliability?
2
How many times should you do an experimental research experiment to improve reliability?
3/4
What is one way you could improve reliability when doing a lab experiment?
Get another experimenter.
The more extraneous variables, the better or worse the reliability?
Better.
