In a Landmark Study on Socioeconomic Differences in Infants, Researchers

question 61

Multiple Choice

In a landmark study on socioeconomic differences in infants, researchers found that children of parents on welfare heard about 600 words per hour, while children from affluent families heard ______ words. Toddlers that hear more words have larger expressive vocabularies and therefore reap a cognitive benefit.

• A) 900
• B) 1,300
• C) 2,100
• D) 5,800

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Definitions:

Stroke Volume

The volume of blood pumped by the heart's left ventricle in one contraction.

Blood Pressure

The pressure of circulating blood on the walls of blood vessels, typically measured on the arteries, essential for circulating oxygen and nutrients.

Chemoreceptors

Sensory receptors that respond to chemical stimuli from the environment or the bloodstream.

Blood Oxygen Levels

The amount of oxygen carried by the blood, usually measured to assess lung and heart efficiency and overall health.