PSYC 412 Lecture Notes - Lecture 7: Naturalistic Observation, External Validity, Relational Aggression
23 Dec 2015
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Document Summary
Questions about people"s behaviours and feelings: like the scales we do for subject pool. There"s no interviewer, which means that they don"t take up their clinician"s time. Because of this, the assumption has always been that they are less good than interviews: you ask fewer questions and there"s nobody there to help. There is an assumed trade-off between higher validity/reliability of interviews and the feasibility of checklists. There are studies suggesting that these yield comparable diagnoses and symptoms. If people have to do either a two hour interview or nothing, they may choose nothing. Both rating scales and interviews rely on someone"s report of symptoms (parents, teachers, the kids themselves) Informants often do not agree, which is counter-intuitive (you would think if a child had adhd that everyone would be able to see it). There"s a correlation of only about . 2-. 4 among informants. Historically, people thought that this was just error, but this is not true.
