PSY 420 Week 6 Class Notes
PSY 420 Week 6 Class Notes PSY420
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This 1 page Class Notes was uploaded by Samantha Bishop on Sunday October 2, 2016. The Class Notes belongs to PSY420 at Lenoir-Rhyne University taught by Dr. Gordon Cappelletty in Fall 2016. Since its upload, it has received 4 views. For similar materials see Psychological Assessment in Psychology at Lenoir-Rhyne University.
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Date Created: 10/02/16
PSY 420 Week 6 Class Notes 9/27/169/29/16 Validity X = T + E X: validity (what does it mean?) E: error (reliabilityaccuracy) Validity=Usefulness 1. Content 2. Criterion 3. Construct 1. Content: are these items measuring what I want? does not equal face validity ratings of experts > 80% 2. Criterion: related to external criteria concurrent: related to right now predictive: predicts performance in the future postdictive: what happened in the past (forensic) 3. Construct: behave the way the theory says it should behave Base Rate (%): Decision Theory relative to the population you are REALITY looking at NO YES % of individuals who have the True negative False Negative characteristics that you are looking at N NO O I False posCtive True positive E D YES BASE RATE