DrLaGuardia Is a Cognitive Neuroscientist Who Is Interested in the Effect

question 11

Multiple Choice

Dr.LaGuardia is a cognitive neuroscientist who is interested in the effect of brain concussions on the ability to recognize faces.He conducts a quasi-experimental study in which he examines football players before and after the regular season,using the Benton Facial Recognition Test
(a published,widely used measure of one's ability to recognize faces) to compare those who received concussions to those who did not.He finds that players who had concussions during the regular season performed worse on the Benton Facial Recognition Test than did players who did not experience concussions.

-Which of the following makes Dr.LaGuardia's quasi-experimental study different from a correlational study?

• A)He used a validated measure of the dependent variable.
• B)He was able to confirm the occurrence of a concussion rather than relying on self-report.
• C)He used a naturally occurring comparison group (i.e. ,players who did not suffer a concussion).
• D)He used members of a real sports team rather than members of the general population.

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Definitions:

Absolute Value Inequality

An inequality that involves the absolute value of a variable expression.

Interval

A range of values between two numbers, often used in mathematics to specify a subset of the real number line.

Absolute Value Inequality

An inequality equation involving the absolute value of a variable or expression, indicating a range of possible values.

Verbal Statement

A mathematical statement expressed in words.