ABSTRACT
Language production is only of a plethora of cognitive tasks humans perform. Compared to the number of models and systems for language comprehension, there are only few for the production of language. The idea of a language of thought says that humans think with an inventory of symbols that can be combined with a limited set of rules. Levelt concentrates on speaking and assumes that writing or using sign language work along the same lines, despite their different output modalities. The choices during language production are often regarded as less critical operations than removing a hypothesis in language comprehension, because this may have the effect that the system is not able to come up with the correct meaning of an utterance. However, choices in language production can make subsequent choices, which would be necessary for expressing the chosen content, impossible.
