reliability

Question 1

define reliability

Answer 1

refers to how consistent something is

Question 2

what is internal reliability

Answer 2

refers to the consistency of results across items within a test

eg do the first 10qs on an IQ test five a similar score to the second 10qs on an IQ test

Question 3

what is the split half method?

Answer 3

involves comparing results of two halves of the research instrument and seeing if they are the same

if the scores are roughly the same the research instrument has high internal reliability

Question 4

what is external reliability?

Answer 4

refers to the extent to which the results vary from one time it is used to another

eg if you take an IQ test on a Monday, do you get the same results if you take it on a Wednesday or a Friday

Question 5

what is test re-test? (also known as replication)

Answer 5

the same participants are tested once using the research instrument and later tested again using the same research instrument and the results are then compared

Question 6

what is inter-rater reliability?

Answer 6

used in observations

measured by conducting a correlation between the ratings of the first observer and the ratings of the second observer