PSY 3171 Lecture Notes - Lecture 3: Inter-Rater Reliability, Medical Model, Concurrent Validity

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Medical model: medical disorders have a clear indication which is deviation, but this is not how mental disorders work. Something is wrong, will nd the cause and x the person: these diagnoses can unfairly stigmatize people. This can lead to the individual identifying with label and experience further deterioration: information is lost through the use of labels. Discrete vs. continuum: dsm takes a categorical approach so you either have the disorder or not, no continuum, there is a need for dimensions mild, moderate or severe. Reliability and validity: to be useful, the dsm must be reliable and valid. Friday, january 18, 2019: most important types of validity: Concurrent validity type of evidence that can be gathered to defend the use of a test for predicting other outcomes. Predictive validity the extent to which a score on a scale or test predicts scores on some criterion measure.

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