Reliability

Question 1

What does internal reliability describe?

Answer 1

The extent to which a measure is consistent within itself

Question 2

How can internal reliability be checked?

Answer 2

Split half method

Question 3

What is the split half method?

Answer 3

Test is randomly divided into two so that each half is equivalent

Question 4

When is internal reliability demonstrated?

Answer 4

If participants scores are similar on both halves of the split-half method

Question 5

What is item analysis?

Answer 5

Performance on each item is compared with overall score - good positive correlation = high internal reliability

Question 6

What does external reliability describe?

Answer 6

The extent to which a measure varies from one use to another

Question 7

How can external reliability be checked?

Answer 7

Test-re test

Question 8

What is test-re test?

Answer 8

The same person is tested twice over a period of time - similar scores demonstrates high external reliability

Question 9

What is inter-observer reliability?

Answer 9

Ratings from more than one person are correlated to check for agreement - if correlation is low = poorly designed categories/poorly trained observers

Question 10

What is inter-interviewer reliability?

Answer 10

Different interviewers should produce the same result when interviewing the same person - if results aren’t same suggests that they are behaving differently - need more training

Question 11

What is replication?

Answer 11

Any study should produce similar findings if repeated