Validity and reliability of self report

Question 1

What is internal validitiy?

Answer 1

• Concern whether a test does asses what it is inteded to assess
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Question 2

What is ecological validity?

Answer 2

Concerns the extent to which the findings from a questionnaire or interview can be generalised beyond the particular study. This will depend to some extent on internal validity but also the extent to which the questions represent the actual experience that is being investigated

Question 3

What is inter interviewer reliability?

Answer 3

Often more than one interviewer is used to collect data for a research study.
Low reliability may be caused if different interviewers behaved differently.

Question 4

What is test retest reliability?

Answer 4

A measure of whether something varies from one time to another i.e. is consistent over time. The same questionnaire or interview is given to the same ppt on 2 occasions to see if the same result is obtained