Psychometrics: An Introduction.

1. Psychometrics and the Importance of Psychological Measurement Observable Behavior and Unobservable Attributes Psychological Tests: Definition and Types Psychometrics Challenges to Measurement in Psychology Theme: The Importance of Individual Differences 2. Scaling Fundamental Issues and Numbers Units of Measurement Additivity and Counting Four Scales of Measurement Summary Suggested Readings 3. Individual Differences and Correlations The Nature of Variability Importance of Individual Differences Variability and Distribution of Distribution Shapes and Normal Distributions Quantifying the Association Between Distributions Variance of Composite Scores Interpreting Test Test Norms Summary Suggested Readings 4.…