Reliability & Validity (OCR A-Level Psychology): Quizzes

What does reliability measure in psychological research?

Consistency of findings

What correlation coefficient indicates a test-retest is reliable?

+0.8

What does inter-observer reliability measure?

Extent observers agree on results

What correlation shows inter-observer reliability?

+0.8 or more

Which type of experiment is said to be most reliable?

Lab experiments

What does internal validity refer to?

Effects due to IV not other factors

What does ecological validity concern?

Generalising to everyday life

How is face validity determined?

Giving test to an expert

What indicates high concurrent validity?

Close agreement with established test

How can questionnaire validity be improved?

Incorporate a lie scale

What procedures reduce demand characteristics?

Single-blind and double-blind

Why use covert observations to improve validity?

Allow natural behaviour