Validity

Question 1

Internal validity

Answer 1

Measure of wether results obtained are solely effected by changes in the variable being manipulated
Eg demand characteristics can cause low internal validity

Question 2

External validity

Answer 2

Measure of if the data can be generalised to factors outside research environment
Types- ecological( real world)
Temporal( across time)

Question 3

Face validity

Answer 3

Wether a test appears on the face of it to measure what intents to be measured

Question 4

Concurrent validity

Answer 4

When a test is similar if match another set of results. Must have correlation coefficient of r=0.80

Question 5

Lie scale

Answer 5

Set of items used to indicate wether a respondent has been truthful in answering

Question 6

Improving validity

Answer 6

Questionnaire- lie scale

Observation- covert

Experiment- control group to compare

Standardisation- minimise investigator effects

Single blind- unaware of aims, decreases demand characteristics

Double blind- Ptps and 3rd party unaware of aims

Question 7

Interpretive validity

Answer 7

Extent to which the researchers interpretation of events match Ptps
May include quotes

Question 8

Triangulation

Answer 8

Number of different sources as evidence
Eg- data from interview, family and friends