|Mentalese: Mentalese is a language of which is assumed that it is used for information processing in the brain. It is supposed to differ from the everyday language, which would require a twofold translation. Critics argue that this makes the explanations simply complicated, or the brain requires a higher work performance than necessary. The homunculus argument has become known against the language of thought. J. Fodor Signal language of the brain for internal processing - H. PutnamVs Mentalese explains nothing, shifts the problem. R. SearleVs|
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Mentalese/belief/Field/Peacocke: Field Thesis: systems that are sufficiently complex for belief terms, have systems of internal representations in which the sentence-analogues have significant grammatical structure.
Mentalese/Peacocke: a model that works without the assumption of a language of thought would have to explain two things:
1. How can one ascribe propositional content, without referring to syntactic structures? - That means, relatively complex content must be attributed to syntactically unstructured (psychic) states.
2. It must be shown, how these states interact with perception and behavior.
A simple model (relation instead of language) does not seem to require the instrumentalist conception of a rational actor. - On the contrary, if someone meets the relational model, a realism regarding mechanisms of rational belief-desire psychology would be justified.
Chr. R. Peacocke
Sense and Content Oxford 1983