Reliability

Question 1

Reliability

Answer 1

-how consistent the findings are when repeated

Question 2

Ways of assessing reliability

List

Answer 2

Test-retest reliability

Inter-observer reliability

Question 3

Test-retest reliability

Answer 3

-a method of assessing the reliability of a questionnaire or psychological test by assessing the same person on two separate occasions

Question 4

Test-retest reliability

Procedure

Answer 4

-appropriate amount of time between two tests
-two scores correlated
-if correlation is a significant positive correlation
└=good reliability

Question 5

Inter-observer reliability

Answer 5

-the extent to which two or more observers agree

Question 6

Inter-observer reliability

Procedure

Answer 6

(total number of agreements)/(total number of observations > 0.080 = high inter-observer reliability

Question 7

Inter-rater reliability

Answer 7

-applies to content analysis

Question 8

Inter-interviewer reliability

Answer 8

-applies to interviews

Question 9

Improving reliability

Questionnaires

Answer 9

-use test-retest method
-correlation should be more than +0.80
-if unreliable
└don’t overuse jargon
└don’t use emotive language or leading questions
└don’t use double-barrelled questions and double negatives

Question 10

Improving reliability

Interviews

Answer 10

• use same interviewer
• use structured interviews
• don’t overuse jargon
• don’t use emotive language or leading questions
• don’t use double-barrelled questions and double negatives

Question 11

Improving reliability

Experiments

Answer 11

• lab experiments most reliable

- same conditions each time they are tested

Question 12

Improving reliability

Observations

Answer 12

-operationalize behavioural categories

└so are measurable, non-overlapping and self-evident