Cosmo Is a Normally Developing 4-Year-Old

question 11

Multiple Choice

Cosmo is a normally developing 4-year-old. Which of the following has Cosmo most likely just begun to do?

• A) use phonemes
• B) use words as symbols
• C) expand his vocabulary through fast mapping
• D) use grammatical morphemes effectively

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Definitions:

Alcohol

A chemical substance that can alter mood and behavior, typically found in drinks such as beer, wine, and spirits.

Neurotransmitter Levels

The concentration of chemical messengers in the brain that transmit signals across synapses from one neuron to another.

Hippocampus

A major component of the brain in humans and other vertebrates, involved in memory formation, navigation, and the emotional response system.

Lead

A toxic metal that can cause harmful effects when absorbed by the body, historically used in products like paint and gasoline.