Linguistic Determinism as a testable hypothesis
Broadly speaking LD is the claim, quoting (De Cruz, 2009)-“that language shapes the way we see the world, and that as a result, speakers of different languages conceptualize reality differently”. The strong version claims that language determines thought entirely. If this were the case, we would have to confront the possibility of incommensurable linguistic communities. The weaker form claims that language influences cognition to an important extent. Many cognitive scientists would reject LD outright citing evidence of high-level cognition e.g. categorisation, that is independent of language. In this view language is necessary for communication but once the information has been passed on cognition is predominantly non-linguistic. Psycholinguists like Steven Pinker (The Language Instinct, 1994), (How the Mind Works, 1997) would argue that language is crucial for thought but that it is, following Chomksy (1965), the general syntactic structure shared by all people throughout the world, a ‘Universal Grammar’, that pre-empts language acquisition, which fundamentally shapes thought. This is against the blank slate view of the person favoured by social constructivists (Social Constructivism). Despite the prevalence of this view in cognitive science LD has persisted in some form or other.
One means by which the argument may be put to rest is to subject it to empirical testing. LD makes the prediction that:
If language determines or at the very least influences cognition, we expect speakers of different languages to have divergent conceptualisations of the world-as the linguist Whorf (1956, 213) put it ‘We dissect nature along lines laid out by our native language’”.