Natural selection of the critical period for language acquisition
Natural selection of the critical period for language acquisition
复制标题
语言习得关键期的自然选择
DOI：
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
M. Nowak
中科院分区：
文献类型：
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作者：
N. Komarova;M. Nowak
人类的语言习得期约为13年。进入青春期后，学习一门语言变得越来越困难。我们用进化的框架来解释这一现象。我们提出了一个动态系统来描述语言习得设备之间的竞争，这些设备在学习周期的长短上是不同的。有两种选择性的力量在决定关键学习期方面起着作用：(1)较长的学习期增加了语言习得的准确性；（ii）学习与影响适应度的某些成本有关。因此，存在一个进化稳定的有限学习周期。这一结果是通过对语言习得手段的纳什均衡分析得到的。有趣的是，进化稳定的学习周期并没有最大化群体的平均适应度。
The language acquisition period in humans lasts about 13 years. After puberty it becomes increasingly difficult to learn a language. We explain this phenomenon by using an evolutionary framework. We present a dynamical system describing competition between language acquisition devices, which differ in the length of the learning period. There are two selective forces that play a role in determining the critical learning period: (i) having a longer learning period increases the accuracy of language acquisition; (ii) learning is associated with certain costs that affect fitness. As a result, there exists a limited learning period which is evolutionarily stable. This result is obtained analytically by means of a Nash equilibrium analysis of language acquisition devices. Interestingly, the evolutionarily stable learning period does not maximize the average fitness of the population.
走向文化传播演化理论：信号传输和接收的共同演化。
DOI：
10.1073/pnas.84.20.7164
发表时间：
1987
影响因子：
11.1
作者：
Aoki,K;Feldman,MW
通讯作者：
Feldman,MW