Reliability - Consistency (or repeatability), External reliability - The results are the same on another set of p's, Internal reliability - If the procedure can be repeated (through standardisation), Inter-observer reliability - If there is agreement between two (or more) observers.. , Validity - Trueness or legitimacy of the data collected., Concurrent validity - Comparison of a new psychological test with an existing one, to see if they produce the same score., Ecological validity - If the research finding can be applied outside of the research setting, if it represents everyday life., Face validity - If the items on a psychological test look like what the test is claiming to measure., Test-retest reliability - A test taker can get the same score no matter how, where, or when they take it, within reason, construct validity - whether a test assesses the construct measured eg. time, criterion validity - the extent to which a measure can predict the performance or behaviour of the measured thing, population validity - refers to whether you can generalise the findings from your sample to a larger group of people, external validity - how representative it is of the population - can it be generalised to and across other situations, people etc, split-half method - the results in two halves of a questionnaire are similar so we can assume the test is reliable,

Reliability and Validity

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