The Results of a Predictive Validity Study of a Test

question 64

Multiple Choice

The results of a predictive validity study of a test will likely be affected most by

• A) the characteristics of the sample tested, such as attrition and self-selection.
• B) the number of items on the test, with longer tests demonstrating higher predictive validity.
• C) the correlation coefficient chosen to measure the validity.
• D) the administration time required for the test compared with that of the criterion test chosen.

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Definitions:

Scanning Electron Microscopy

A type of electron microscopy that produces high-resolution images of the surface of a sample by scanning it with a focused beam of electrons.

Electron Beam

A stream of electrons moved through a vacuum or air, utilized in various applications including welding and electron microscopy.

Integrins

Receptor proteins that bind to specific proteins in the extracellular matrix and to membrane proteins on adjacent cells; transmit signals into the cell from the extracellular matrix.

Middle Lamella

The middle lamella is the layer of pectin-rich material between the cell walls of adjacent plant cells, acting as a cementing agent to hold them together.