Split-half - A way of checking internal reliability where the method is divided in two and each part is given to the same ppts on two different occasions , Test-retest - A method of checking external reliability where ppts complete the same tasks more than once to compare their results over time, Inter-rater - A way of checking internal reliability in observations and content analyses, Predictive - A method of checking validity which involves assessing how successfully a study can determine the future behaviour of the same ppts, Content - A method of checking validity that involves an expert being asked to consider the nature of the study, Construct - A method of checking validity which IQ/ personality tests should ideally meet, Face - The most basic method of checking validity which can be achieved by asking ppts what they thought the study aims were, Concurrent - A method of checking validity where an older, well validited test is compared with the new test being assessed,

Checking Validity & Reliability

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