In a Nonequivalent Group Design, the Nonequivalence of the Groups

question 33

Multiple Choice

In a nonequivalent group design, the nonequivalence of the groups is sometimes demonstrated by a pretest. If a researcher is worried that the units of measurement on the scale are not equal throughout the scale, the researcher is worried about which threat to internal validity?

• A) Maturation
• B) History
• C) Statistical regression
• D) Instrumentation

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Definitions:

Neuroleptic Drugs

These are a class of medications primarily used to manage psychosis, particularly in schizophrenia and bipolar disorder, by blocking dopamine receptors.

Neurological Disorder

A disorder affecting the nervous system, often resulting in various dysfunctions related to movement, communication, or cognitive abilities.

Involuntary Movements

Movements that occur without conscious control, often as a result of a neurological disorder.

Lithium

The lightest of the solid elements in the periodic table of elements, widely used to treat bipolar disorder.