Which of the Following Statements Is True About the Biological

question 24

Multiple Choice

Which of the following statements is true about the biological factors associated with attention-deficit/hyperactivity disorder (ADHD) ?

• A)The prefrontal cortex, which regulates attention, organization, and planning, is larger in volume in children with ADHD and shows abnormal activation.
• B)The catecholamine neurotransmitters, which include dopamine, serotonin, and norepinephrine, appear to function abnormally in individuals with ADHD.
• C)The notion that hyperactivity in children is caused by dietary factors has been substantiated in controlled studies.
• D)ADHD is largely associated with high birth weight.

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Definitions:

Independent Variable

A variable in a scientific experiment that is manipulated or changed to observe its effect on a dependent variable.

Part-time

Refers to jobs or positions that require fewer hours of work per week than full-time positions.

Dependent Variable

The factor in research that is likely to shift following modifications to the independent variable.

Independent Variable

An independent variable is one that is manipulated or categorised to observe its effect on a dependent variable.