Reliability Flashcards
What is Reliability
results of studies are
- consistent when replicated
what three measurement tools are used to test reliability
- observation
- Questionnaires / Interviews
- Experimental conditions
What is external reliability
how consistent results are when repeated
what is internal reliability
how consistent the form of measurement is within the test
how do you assess internal reliability
- split half method
how do you assess external validity
- test/retest
- inter-rater reliability
what is the split half method
split a test into two halves - stronger correlation = more internally reliable
what is the test/retest method
repeat study with same measures = strong correlation = more reliable
what is inter-rater reliability
two / more observers - observe - at different times - stronger correlation between the two = more reliable