Reliability Flashcards
Introducing reliability
psychologists tend not to measure concrete things so reliability is difficult to establish
test-retest
the same test is administered to the same person on different occasions and results compared
inter-observer reliability
observers should compare data in a pilot study or at end of actual study to make sure behavioural categories are consistently applied
Improving Reliability- Questionnaires
if a questionnaire has low test-retest reliability, some items may need to be changed to closed questions as these may be less ambiguous
Improving reliability- interviews
should avoid questions that are leading or ambiguous and ensure interviewers are trained
improving reliability- experiments
standardisation of procedures will minimise extraneous variables
improving reliability- observations
behavioural categories should be properly operationalised and not overlap