Measuring Effect Sizes: The Effect of Measurement Error

Journal Article

Measuring Effect Sizes: The Effect of Measurement Error

Abstract

This paper estimates the overall extent of test measurement error and how this varies across students using New York City longitudinal data. Results reinforce the importance of accounting for measurement error, as it meaningfully increases effect size estimates associated with teacher attributes. There are important differences in teacher effectiveness that are systematically related to observed teacher attributes. Such effects are important in the formulation and implementation of personnel policies.

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