PSYB04H3 Lecture Notes - Lecture 5: Discriminant, Eye Movement, Face Validity
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Scale: can mean 1 of 2 things, response options to a single question, do you own a car, yes, no. A dichotomous (or nominal)thing because it has 2 options. I(cid:374) a se(cid:374)te(cid:374)(cid:272)e: (cid:862)(cid:449)hat t(cid:455)pe of s(cid:272)ale is the (cid:396)esea(cid:396)(cid:272)he(cid:396) usi(cid:374)g fo(cid:396) this (cid:395)uestio(cid:374)? (cid:863: series of questions that measure the same concept or related questions. Also referred to as an instrument or a test. A resea4cher would say i used a particular scale to measure depression. There"s a bunch of scales together measure depression. A bunch of questions. (cid:862)(cid:449)hi(cid:272)h s(cid:272)ale is the (cid:396)esea(cid:396)(cid:272)he(cid:396) usi(cid:374)g to (cid:373)easu(cid:396)e x? (cid:863) Item: single question in a scale, an item is the questions itself, ex. Scale to mention shyness with 10 item: a 10 item shyness scale. Why does measurement matter: researchers using the best scales possible for the study. Without a good system of measurement, a study could be meaningless: ex: exercise relieves symptoms of depression.
