Types of reliability

Question 1

What are the 3 types of reliability?

Answer 1

1. External reliability
2. Internal reliability
3. Observer reliability

Question 2

What is external reliability?

Answer 2

Producing the same results each time the test/ study is carried out

Question 3

What is internal reliability

Answer 3

The consistency within a test, usually associated with questionnaires and tests

Question 4

What is observer reliability?

Answer 4

When 2 or more observers produce the same record of their observations

Question 5

What are the 3 ways of assessing reliability?

Answer 5

1. The split half method
2. The test retest method
3. Inter observer (or rater) reliability

Question 6

What is the split half method?

Answer 6

Compares a person’s performance on 2 halves of a test or questionnaire

Question 7

What type of reliability does the split half method assess?

Answer 7

Internal reliability

Question 8

What is the test retest method?

Answer 8

Where a test is repeated several times using the same participants

Question 9

What type of reliability does the test retest method assess?

Answer 9

Internal reliability

Question 10

What is the inter observer (or rater) reliability method?

Answer 10

• The observations of 2 or more observers are compared for similarity
• The observers would be trained in the use of a coding system so they can identify and are clear on exactly what they’re looking for

Question 11

What type of reliability does the inter observer (or rater) reliability method assess?

Answer 11

External reliability

Question 12

What are the 3 ways of improving reliability?

Answer 12

1. Take multiple measurements
2. Standardised procedures
3. Objective measures