Who's my little monkey? Effects of infant-directed speech on visual retention in infant rhesus macaques.
Who's my little monkey? Effects of infant-directed speech on visual retention in infant rhesus macaques.
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DOI：
10.1111/desc.12519
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发表时间：
2018-03
影响因子：
3.7
通讯作者：
Paukner A
中科院分区：
文献类型：
--
作者：
Slonecker EM;Simpson EA;Suomi SJ;Paukner A
人类和非人灵长类成年动物在与婴儿互动（如喂食、玩耍）时，在许多情况下都会使用婴儿导向的面部和声音表达。这种以婴儿为导向的沟通方式，被称为婴儿导向语（IDS），似乎在许多方面对人类婴儿有益，包括促进语言习得。考虑到成人使用IDS的各种情况，我们假设IDS支持超越语言领域的学习，并且这些好处可能延伸到非人类灵长类动物。我们将2.5个月大的恒河猴婴儿（N=15）暴露在IDS，成人定向语言（ADS）和非社会控制（CTR）中，同时播放不相关刺激的视频。在5分钟或60分钟的延迟后，婴儿们将熟悉的视频与新视频并排播放。在ADS和CTR条件下，婴儿在延迟5分钟后表现出新颖性偏好，而在延迟60分钟后不表现新颖性偏好，而在IDS条件下，只有在延迟60分钟后才表现出新颖性偏好。这些结果首次表明，暴露在IDS中会影响婴儿的长期记忆，即使是对不会说话的动物也是如此。
Both human and nonhuman primate adults use infant-directed facial and vocal expressions across many contexts when interacting with infants (e.g. feeding, playing). This infant-oriented style of communication, known as infant-directed speech (IDS), seems to benefit human infants in numerous ways, including facilitating language acquisition. Given the variety of contexts in which adults use IDS, we hypothesized that IDS supports learning beyond the linguistic domain and that these benefits may extend to nonhuman primates. We exposed 2.5-month-old rhesus macaque infants (N=15) to IDS, adult-directed speech (ADS), and a nonsocial control (CTR) during a video presentation of unrelated stimuli. After a 5- or 60-minute delay, infants were shown the familiar video side-by-side with a novel video. Infants exhibited a novelty preference after the 5-minute delay, but not after the 60-minute delay, in the ADS and CTR conditions, and a novelty preference in the IDS condition only after the 60-minute delay. These results are the first to suggest that exposure to IDS affects infants’ long-term memory, even in non-linguistic animals.