The power of language to reflect culture and influence thinking was first proposed by an American linguist and anthropologist, Edward Sapir (1884–1939), and his student, Benjamin Whorf (1897–1941). The Sapir–Whorf hypothesis stated that the way we think and view the world is determined by our language (Anderson & Lightfoot, 2002; Crystal, 1987; Hayes, Ornstein, & Gage, 1987). Instances of cultural language differences are evidenced in that some languages have specific words for concepts whereas other languages use several words to represent a specific concept. For example, the Arabic language includes many specific words for designating a certain type of horse or camel (Crystal, 1987). To make such distinctions in English, where specific words do not exist, adjectives would be used preceding the concept label, such as quarter horse or dray horse.
Cultural differences have also been noted in the ways in which language is used pragmatically. In our American culture, new skills are typically taught and learned through verbal instruction (Slobin, 1979). In some cultures, new skills are learned through nonverbal observation. A distinction has also been made between cultures that encourage independent learning and those that encourage cooperative learning (McLeod, 1994).
Differences in the social roles of adults and children also influence how language is used. Home and school contexts may represent different cultures, subcultures, or both and may influence language acquisition in noticeable ways. Nonverbal cues (e.g., facial expression) and contextual cues (e.g., shared experience) have different communicative roles in different cultures (Kaiser & Rasminsky, 2003). In some cultures, prelinguistic children (who are not yet verbalizing) are spoken about rather than spoken to (Heath, 1983). Children may be expected, and thus taught, to speak only when an adult addresses them. They are not encouraged to initiate conversations with adults