measuring concepts

Question 1

measuring concepts

Answer 1

key feature of quantitive research

Question 2

what is a concept?

Answer 2

an idea or obersvation that can be the IV or DV

Question 3

what is reliability?

Answer 3

the measure of consistency

Question 4

measures of reliability

Answer 4

• internal
• inter-observer
• stability (consistant over time, detected by test-retest)

Question 5

internal reliability

Answer 5

multiple indicators relate to the same concept

Question 6

how to measure internal reliability

Answer 6

split half method
* split 2 groups
* calculate correlation

Question 7

inter-rater agreement

Answer 7

comparing subjective judgement of multiple researchers (open ended questions, structured observations)

Question 8

measurement validity

Answer 8

• face validity
• convergent validity
• discriminant validity

Question 9

face validity

Answer 9

simple measure (does what it says on the tin)
e.g single item measure

Question 10

convergent validity

Answer 10

how similiary the measures we develop perform to other measures of the same concept
e.g questionnaire results, structured observations

Question 11

discriminate validity

Answer 11

comapre measures of related but different concepts developed using similar methods