While Studying Rates of Language Acquisition for New Canadians from Different

question 12

Multiple Choice

While studying rates of language acquisition for new Canadians from different countries,Curtis Cunning's research assistants informed him that 7 of the 65 subjects had quit and walked out before the study was completed.What type of threat to internal validity does Curtis' experiment have?

• A)Selection bias
• B)History effect
• C)Experimental mortality
• D)Maturation
• E)Testing effect

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Definitions:

Electromagnetic Radiation

Energy that travels through space in the form of waves, including radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Vibrational Motions

The movement of atoms within a molecule that involves the stretching and bending of chemical bonds.

Absorption

The process by which one substance, such as a solid or liquid, takes up another substance, such as a gas or liquid, through atomic or molecular interactions.

Nonlinear Molecule

A molecule that does not have a straight-line or linear shape, often having a bent or three-dimensional structure.