The hearing of a person who has trouble understanding speech can appear normal or nearly normal on an audiogram, because a standard hearing test measures only the ability to detect pure tones along a scale of frequencies.
As this test measures only whether the individual is sensitized or not, a positive test reaction is not necessarily an indicator of clinical disease.
By design, the blood cholinesterase test measures only the "active" form of the enzyme, but it is the inactive or OP-adducted form of the enzyme that is the more quantifiable biomarker.
For various practical reasons, the passport tests measure only the concentration of red cells in athletes' blood, not the total amount of red cells in their bodies.
Those critics also claim that professional knowledge tests measure only general and academic knowledge rather than functional pedagogical knowledge and skills, and they question the validity of such tests as predictors of future teaching competence.
The goal of the new definition was to make education more accountable, but tests measure only certain things and do not measure many others.
Despite the widely held historic view that Intelligence Quotient (IQ) tests measure only inborn, immutable and innate ability, research has proven that there has in fact been a steady rise in IQ scores across generations that cannot be explained genetically.
Most TNB tests measure only accuracy, whereas most CNB tests measure both accuracy and speed.
Similarly, in Iran, university entrance tests measure only the theoretical knowledge and the aptitude of the applicants; whereas, requirements of the nursing profession are much different and broader.
Put differently, formative testing measures not only how a student performs compared to an average but also how that student performs compared to herself in prior periods.
