PSY 420 Week 5 In-Class Notes
PSY 420 Week 5 In-Class Notes PSY420
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This 1 page Class Notes was uploaded by Samantha Bishop on Friday September 23, 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: 09/23/16
PSY 420 Week 5 Class Notes 9/20/169/22/16 Limits on Reliability *WE DO NOT ASK QUESTIONS, WE PRESENT ITEMS* TEST LENGTH ITEM CONTENT item difficulty: % of individuals who answer the item in the scored direction ideal= 50%= good discrimination 40%60% is okay too high of difficulty or too low of difficulty adds nothing to your test in terms of reliability high difficulty= easy item low difficulty= hard item ex: power/performance tests are based on easy to hard questions RANGE OF TALENT 1. Is this person’s score average? compare to population use Standard Deviation person to person comparison 2. Does one score differ from another? score to score comparison use SEM (Standard Error of Measurement)
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