214
215
Development of Language and Symbol Use
216
symbols systems for representing our thoughts, feelings, and knowledge and for communicating them to other people
hese utterances were produced by one boy during the process of his becoming a native English speaker (Clore, 1981). Each one reflects the capacity that most sets humans apart from other species: the creative and flexible use of symbols, which include language and many kinds of nonlinguistic symbols (print, numbers, pictures, models, maps, and so forth). We use symbols (1) to represent our thoughts, feelings, and knowledge, and (2) to communicate our thoughts, feelings, and knowledge to other people. Our ability to use symbols vastly expands our cognitive and communicative power. It frees us from the present, enabling us to learn from the generations of people who preceded us and to contemplate the future. Becoming symbol-minded is a crucial developmental task for children around the world (DeLoache, 2005).
In this chapter, we will focus primarily on the acquisition of the preeminent symbol system: language. We will then discuss children’s understanding and creation of nonlinguistic symbols, such as pictures and models.
The dominant theme in this chapter will once again be the relative contributions of nature and nurture. A related issue concerns the extent to which language acquisition is made possible by abilities that are specialized for language learning versus general-purpose mechanisms that support all sorts of learning.
The sociocultural context is another prominent theme and features research that examines differences in language acquisition across cultures and communities. This comparative work often provides evidence that is crucial to various theories of language development.
A third recurring theme is individual differences. For any given language milestone, some children will achieve it much earlier, and some much later, than others. The active child theme also puts in repeated appearances. Infants and young children pay close attention to language and a wide variety of other symbols, and they work hard at figuring out how to use them to communicate.