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What Does It Mean to Say That Theories, Principles, and Models

question 33

Essay

What does it mean to say that theories, principles, and models are "purposeful simplifications"?


Definitions:

Observed Score

The score actually obtained by an individual on a test or measurement.

True Score

The true score in psychometrics is an estimate of an individual's actual ability or trait level, free from measurement error.

Error Score

The difference between an observed value and the true value in data collections or experiments, indicating the amount of error in measurements.

Real Score

The actual measurement or true value that reflects the characteristic or ability being assessed, without error.

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