When infants first begin to make vocal sounds, they can prod…

When infants first begin to make vocal sounds, they can produce sounds using phonemes that appear in all of the world’s languages. Over time, they begin to make their vocal sounds using only the phonemes that appear in their own language. Infants’ vocal sounds are called  ________________ , and the reduction in the variety of sounds is a result of ________________ .

Roland is three years old. He spends a lot of time watching…

Roland is three years old. He spends a lot of time watching his older brother ride a bike. Roland really wants to ride a bike too, but he doesn’t yet have the balance and coordination to do so. Which of the following steps in the modeling process is Roland incapable of right now?