Why Is Predictive Testing for Huntington Disease Avoided for a 4-Year-Old

question 14

Multiple Choice

Why is predictive testing for Huntington disease avoided for a 4-year-old child who has one grandparent with the disorder?

• A)Unless one of the parents is positive for the gene mutation, a negative finding would be noninformative.
• B)The Huntington disease mutation is poorly penetrant and may never be expressed even when inherited.
• C)A 4-year-old child cannot understand or participate in the genetic counseling process.
• D)There are no effective primary or secondary prevention strategies for this disorder.

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Definitions:

Quasi-experimental Design

A research design that resembles an experimental design but lacks the element of random assignment to control and experimental groups.

Experimental Design

is the framework or plan for a study used by researchers to test hypotheses by manipulating and then measuring variables.

Random Assignment

A method used in experiments to place participants into different groups using randomization, ensuring that each participant has an equal chance of being assigned to any group, thus minimizing biases.

Alcohol Effects

The physiological and psychological impacts that consume alcoholic beverages can have on the human body, including changes in behavior, cognition, and physical function.