Reliability And Validity Notes
This is a sample of our (approximately) 4 page long Reliability And Validity notes, which we sell as part of the Psychology Notes collection, a B package written at York College in 2015 that contains (approximately) 157 pages of notes across 48 different documents.
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Reliability And Validity Revision
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Reliability and validity Reliability: repetition and consistency Validity: are you measuring what you claim to?
Correlational study looks for a relationship between two variables
Positive correlation is both scores increase together Negative/ low correlation means there is poor reliability
Types of reliability:
Internal o Is the consistency within the measurement you are using?
E.g. everyone has the same questionnaire, so more consistent than an interview
E.g. Loftus has poor internal reliability External o Refers to consistency over time when repeating the experiment
E.g. giving out the same questionnaire on different days
Poor external reliability if the questionnaire has to be changed in a longitudinal study Observer o For an observer to be consistent in their observation
Are they recording and interpreting information consistently
However, there are individual opinions and subjectivity
Want good objectivity but achieving this is difficult due to subjectivity o Intra observer reliability
To what extent is an individual consistent in their observation
Tiredness and boredom can effect this o Inter observer reliability
To what extent is there consistency between the observers
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