Reliability

Question 1

What is reliability ?

Answer 1

Reliability is the consistency of a study. For self-report methods, reliability ensures that responses are consistent across times and occasions.

Question 2

What is internal reliability ?

Answer 2

Whether the procedure of the study is standardised (controlled).

Question 3

What is external reliability ?

Answer 3

Consistency of the findings outside the study (whether results can be replicated outside the study).
-Big samples

Question 4

What is inter-rater reliability ?

Answer 4

Agreement between 2 or more researchers. Has to be 80% which can be obtained via a consensus.

Question 5

What are extraneous variables ?

Answer 5

If there is not enough control, extraneous variables occur. These are variables that aren’t the IV but can affect the DV if not controlled for.

Question 6

What can extraneous variables lead to ?

Answer 6

Extraneous variables that haven’t been controlled for turninto confounding variables that affect the results of the research.

Question 7

What is the split-half method ?

Answer 7

Two halves of the questionnaire are similar so can assume it is reliable. Mainly used in self-reports. E.g. repeated questions but asked slightly different to check reliability of the answers given.

Question 8

What is the test retest method ?

Answer 8

Test participants more than once. Reliable if person gets same or similar scores.