PSY 3307 Study Guide - Final Guide: Factor Analysis, Effect Size, Computational Problem
Document Summary
Goal of measurement: manage information, streamline decision making. How do we measure performance: ppv, reliability (test-retest, parallel forms, cronback"s alpha, inter-rater, sensitivity, validity (construct, content, interior, structural, convergent, divergent, incremental, predictive, face, types of questions (close or opened ended, format of questions, response format. Types of tests: expert rated, self-report, screening / cut scores, projective tests, ability tests, aptitude tests, diagnostic, personality, standardized test, achievement. Sources of variability: bias, number of options, demand characteristics. Fast move (t = x + e) Proportion of variance = r2 **this is very important: performance. Everyone takes a test and receives a score, everyone gets difference scores. The little differences between people"s test score accounts for variance. Say you get 5 and i get 3, this little difference is still variance. Then both people do another test and once again have small difference in scores. ***it"s about linking little bit of variance on one test to another test.
