They found a dramatic shift in attention: When the speaker used English, the 4montholds gazed mostly into her eyes. The 6montholds spent equal amounts of time looking at the eyes and the mouth. The 8 and 10montholds studied mostly the mouth. At 12 months, attention started shifting back toward the speaker's eyes.
It makes sense that at 6 months, babies begin observing lip movement, Lewkowicz says, because that's about the time babies' brains gain the ability to control their attention rather than automatically look toward noise.
But what happened when these babies used to English heard Spanish? The 12montholds studied the mouth longer, just like younger babies. They needed the extra information to decipher (破译)the unfamiliar sounds.
“It's a pretty interesting finding,” says University of Iowa psychology professor Bob McMurray, who also studies baby speech development. The babies “know what they need to know about, and they're able to draw their attention to what's important at that point in language development.”
1. Which of the following is the best title of the passage?
A. Babies Learn to Talk from Hearing Sounds
B. Babies Learn to Talk by Reading Lips
C. How Babies Learn Language after Birth
D. Babies Can Understand a Foreign Language
2. When an adult talks to a 5monthold baby, the baby usually ______.
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