Reliability

Question 1

How do you check test-retest reliability?

Answer 1

• Same participants retake test 1-2 weeks later
• Two sets of scores are correlated then plotted on a scatter graph
• Correlational stats testing

Question 2

How do you test reliability of interviews?

Answer 2

• Same participants are interviewed 1-2 weeks later
• Stats test
• Inter-interviewer reliability assessed by using two interviewers on the same person
• Results are then plotted and stats tested

Question 3

How is reliability improved?

Answer 3

• Reduce ambiguous questions by testing on small group
• Confirm reliability of experiments by testing exact same procedures on a different group of participants