Validity Is Concerned with the Degree to Which the Instrument

question 29

Short Answer

Validity is concerned with the degree to which the instrument measures the _________ it is supposed to measure.

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Definitions:

Adhesive Forces

Attractive forces between unlike substances, such as water molecules adhering to glass surfaces.

Cohesive Forces

The attractive forces between like molecules that are responsible for the tendency of certain materials to stick together.

DNA Replication

The process by which DNA is duplicated; ordinarily a semiconservative process in which a double helix gives rise to two double helices, each with an "old" strand and a newly synthesized strand.

Radioactive Isotopes

Atoms of the same element that have different numbers of neutrons in their nuclei, causing them to be unstable and decay, releasing radiation.