Reliability

RELIABILITY

Consistency of measurements.

Reliability of observations assessed with inter-observer reliability, which should be >.80.

Improved by better operationalisation of behavioural categories and by training observers.

Reliability of self-report assessed with test-retest: repeat test with same participants over a short interval of a few weeks.

Improved by reducing ambiguity in questions.

Reliability in experiments may relate to how the dependent variable is measured (e.g. using observations or self-report).

Improved using standardisation of procedures in order to be able to repeat method with all participants.