When I'm talking I can hear my own voice. And with that feedback I can tell almost immediately when I’ve made an error. Like I just did. An error.
Adults have this skill and so do older children. But we are not born with this ability. It develops between ages two and four. So finds a study in the journal Current Biology.
Researchers had adults, four-year-olds, and two-year-olds say “bed” repeatedly. But scientists filtered the sound so that the subjects heard themselves through headphones pronouncing it as “bad.” Adults spontaneously compensated, and changed so that the word sounded correct to their own ears. They actually wound up saying “bid.”
Four-year olds also adjusted their speech.
But the two-year olds kept saying “bed” even though they kept hearing “bad.”
So if two-year olds ignore their own vocal feedback, how do they learn to say words correctly?
Well, it’s not clear. ______（请填一句话。）________
Researchers think it might simply be that they rely on parents to monitor and correct their speech.
Then again, with sentences like..., it's no surprise they aren’t paying attention to what they are hearing.
But this study suggests that toddlers might have an alternative source of auditory feedback.
suggest 引出句型。 当我讲话的时候我能听到我自己的声音。根据这种反馈我就能及时发现说话时的错误。就像我刚才那样，一个错误~ 成年人和稍大一些的小孩子都可以做到。但是我们可不是天生就会哦~是在2到4岁的时候才发育形成的。这项研究已发表在《当代生物学杂志》上。 研究人员分别让成年人、4岁儿童和2岁大的孩子重复“bed”这个单词。但是科学家们把声音过滤掉了，因此受试对象们只能从他们戴的耳机中听到“bad”这个单词。成年人立即能够做出补偿并且改正这个错误，因此他们重复的时候说的单词会校正其耳中听到的那个词，他们兴奋的重复“bid”这个词。 4岁儿童也相应的对所说的做出调整。 但是2岁儿童仍然保持重复说“bed”这个词，即使他们其实一直听到的词是“bad”。 所以如果2岁儿童忽略他们自己发音的反馈信息，他们会如何正确的学习单词呢？ 目前这还不是很清楚。但是这项研究揭示幼儿一定已经具备对声音反馈调整的资源。研究人员们认为也许就是这样：他们依靠父母来监测并校正他们语言上的错误。 那么再听，像这些句子……（幼儿呓语，我实在搞不清它在说什么。。。），如果他们并没有注意自己听什么，这一点儿也不奇怪。