Infants Begin to Alter Their Behaviour in Response to Adult

question 329

Multiple Choice

Infants begin to alter their behaviour in response to adult facial expressions at about ________ of age.

• A) 6 months
• B) 9 months
• C) 12 months
• D) 18 months

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Definitions:

Positron Emission Tomography (PET) Scan

An imaging test that helps reveal how tissues and organs are functioning by using a radioactive drug to show activity.

Rheumatoid Factor

An antibody found in the blood that is a common indicator of rheumatoid arthritis.

Autoantibody

An antibody produced by the immune system that mistakenly targets and attacks the body's own tissues or cells.

Phagocytosis

The process by which cells, especially immune cells, engulf and digest foreign particles or pathogens.