Study only completed once (can't know consistancy)
Occurs in; Experiments and Interveiws
Test/re-test – Replicating the procedure as closely as possible in a follow up study.
Observer Reliability (consistancy of cheaklist)
Occurs in; Naturalistic observations, Interveiws
Inter-rater reliability – A technique used to assess how consistently different observers are using a behavioural checklist.
Reliability of Measuring Tool (is every item measuring the same thing?)
Occurs in; Questionnaires, Scales, Interveiws
Split Half Method – A technique used to assess the internal reliability of a scale. Each ‘half’ of a participants responses are compared for consistency.
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