PSYB32H3 Lecture Notes - Photon, Impression Management, Single-Photon Emission Computed Tomography
Document Summary
Reliability and validity in assessment: reliability. It is dynamic; sometimes results will change over time. A different version of the test is important so there are no practise effects. Make sure that all the items on the test are measuring the same thing: validity. Definition: reliability is a necessary component of validity. We want to sample to content of the disorder. To have a strong content validity, a test should measure every aspect of the disorder. When we develop a test we need to make sure it measures what we say it measures. Ex: administering 2 different kind of tests that show patient is depressed. Psychological disorders are constructs, not tangible things. Comparing scores of people with anxiety and without anxiety and comparing scores: do this in order to demonstrate that there is a difference, and that this measure is actually measuring this construct. Defined by what paradigm the interviewer is working from. Semi structured interview doesn"t systematically follow everything.
