Flashcards
reliability and validity
Cards in this deck (14)
- 1Reliabilitymeasure variables consistently
- 2External Reliabilityalways produce the same results in the same situation with the same people
controls - 3test- retestin a reliable self report the same person would give the same assessment. This is test-retest assessment.
If same person responds in the same way twice in a similar way, there is external reliability - 4Internal reliabilityabout the consistency of items within the measures itself
shows that items within the self report tool are measuring the same phenomenon - 5split half assessmentmeasure internal reliability in which scores from two halves of a test are compared. for example: a questionnaire testing extraversion might contain 20 questions. if scores from the first half of these are correlated with the scores from the second half, the measure has good reliability
- 6inter-rater reliabilityto maintain high reliability, researchers must interview in standardised ways and interpret the response to open questions consistently- inter-rater reliability
it is checked by each researcher assessing the same self reports and then correlating their finding. if there is a positive correlation the researchers are reliable. - 7Validitythe extent to which a technique is capable of achieving the intended purpose.
- 8internal validityrefers to the test or measure being used: for example- in an experiment, whether changes in the DV are caused by the IV rather then sources of error
- 9face validitywhether a measure appears, at face value to test what it claims
- 10criterion validityindicates whether a phenomenon measured in one way will relate to, or predict, some other related variable
- 11concurrent validitywhether a measure will produce a similar score for a particular individual as another test that claims to assess the same phenomenon. this can be assessed by comparing the results to a measure known to be effective.
- 12construct validitylooking at whether a measure is based on some certain to exist phenomenon, which it tests.
- 13external validityissues beyond the investigation, particularly whether findings will be generalizable to other populations, location, contexts and times.
Ecological validity - 14population validitythe extent to which findings from one sample can be generalised to the whole population from which the sample was taken
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- A level Psychology Flashcards on reliability and validity , created by maia haley on 19/01/2018.
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- maia haley
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