A Research Study on a Group of Children with Autism

question 176

Multiple Choice

A research study on a group of children with autism will compare treatment delivered by parents at home to treatment delivered by teachers at school. If the study finds that the treatment delivered at school is more effective, which item is the BEST example of a confounding variable?

• A) The treatment
• B) The children
• C) The diagnosis
• D) Differences between the parents and teachers

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Definitions:

Isotonic Dehydration

A condition where the body loses water and electrolytes in equal proportion, maintaining the osmolarity of the blood.

Hypertonic Dehydration

A condition resulting from the loss of water exceeding the loss of electrolytes, leading to a high concentration of solutes in the blood.

Immunization

The process by which an individual's immune system becomes fortified against an agent (known as the immunogen).

Hepatitis B Vaccine

A biological preparation that provides active acquired immunity to hepatitis B.