Reliability

Question 1

What is reliability?

Answer 1

Refers to consistency, repeated and similar results obtained it’s reliable

Question 2

What is internal reliability?

Answer 2

Consistency of the test or measure within itself

Question 3

What is external reliability?

Answer 3

Consistency of findings over time

Question 4

Issues and dealing with reliability

Answer 4

• Only one researcher: use more than one
• Not been replicated: repeat study
• Instructions not given the same: standardise procedures
• Key terms not clear: operationalise terms
• Not asked or answered questions in same way: standardise questions and answers

Question 5

Split half

Answer 5

Assessing internal validity
Compare two halves of the same measure
Assessing same thing: high correlation (close to 1)

Question 6

Inter-rater

Answer 6

Consistency of recordings between two or more researchers
Important each agrees so data is reliable
Assessing same thing: high correlation (close to 1)
Inter-rater consistency

Question 7

Test-retest

Answer 7

Assessing external validity
Running same test again to see if results are the same over time and place
Same results: high correlation
Test-retest consistency