Key Defintions - Validity And Reliability

Question 1

Define reliability

Answer 1

Consistency. A measuring device should produce consistent results within itself or every time used

Question 2

Define validity

Answer 2

Whether an observed effect is genuine (measure what supposed to measure)

Question 3

Internal validity

Answer 3

Were changes in the DV due to the IV?

Question 4

Internal reliability

Answer 4

Items in a questionnaire or psychological test are consistent within themselves

Question 5

External reliability

Answer 5

A questionnaire or psychological test produces consistent results every time it is used

Question 6

External validity

Answer 6

Generalising research finding to different people or different environments

Question 7

Face validity

Answer 7

The appearance of a test should look like it is measuring what it claims to measure

Question 8

Test-retest reliability

Answer 8

Assesses external reliability, assessing whether whatever is being measured has remained stable OVER TIME

Question 9

Inter-observer reliability

Answer 9

Assesses the consistency of observations, the degree to which different observers give consistent recordings of the same phenomenon. Also inter-rather reliability and inter-interviewer reliability

Question 10

Concurrent validity

Answer 10

Establish validity by relating once psychological measure to an existing measure of the same thing

Question 11

Ecological validity

Answer 11

To what extent the results from a study can be generalised to other settings

Question 12

Temporal validity

Answer 12

Findings from a research study can be generalised to OTHER TIMES AND ERAS

Question 13

Population validity

Answer 13

To what an extent the results from a study can be generalised to the rest of the population (eg different ages cultures and classes)