PSYB04H3 Lecture Notes - Lecture 4: Graduate Management Admission Test, Extraversion And Introversion, Level Of Measurement
Document Summary
Lecture 4: good (and bad) measurement of variables. Scale means 2 di erent things: response options to a single question. Yes and no are the response options. Dichotomous scale because there are 2 possible options, can have 5-point, 7-point, etc. What kind of scale was that measured on: series of questions that measure the same concept or related questions. Also referred to as an instrument or a test; e. g. an instrument or test that measures happiness is a scale that measures happiness. Item single question in a bigger scale. Bad measurement means inaccuracy, and inaccuracy can lead to bad advice and bad decisions. Academic admission tests are measurements of academic ability gre, mcat, gmat: controversy has plagued these standardized tests because you need to understand measurement concepts. Loads of bogus measures exist so you have to be able to distinguish whether they"re measuring what they"re supposed to measure; things may sound valid but might not be.
