Reliability across all methods of investigation

Question 1

What is reliabilty?

Answer 1

How consistent findings from an investigation are

Question 2

What is Internal Validity?

Answer 2

Describes how consistent something is within itself

Question 3

How can Internal validity be assessed?

Answer 3

Split half method- 1/2 questions on one form and 1/2 on the oother two forms of the same test are done separately and should yeild the same score

Question 4

What is External Validity?

Answer 4

Consistent results are produced regardless of when the investigation is or who administers it

Question 5

How can External Validity be assessed?

Answer 5

Inter-observer reliability
Test-retest method- same test on same person on different occasions

Question 6

How can Reliabilty be improved in Questionaires?

Answer 6

Replace some open questions where misinterpretation may occur with some closed, fixed choice questions that are less ambiguous

Question 7

How can Reliabilty be improved in Interviews?

Answer 7

Same interviewer each time
All interviewers must be properly trained- no leading/ ambiguous questions
Interviewers must be able to structure their interviews in a certain way (Structured Interview more reliable than Unstructured)

Question 8

How can Reliabilty be improved in Experiments?

Answer 8

Strict control over aspects- instructions given to ppts and conditions (variables)
Repeat to get similar findings
Lab setting

Question 9

How can Reliabilty be improved in Observations?

Answer 9

Behavioural catergories properly operationalised
Catergories do not overlap
All behaviours covered
Objective checklist