Two experiments with monolingual German-speaking 2.5- to 4.5-year-olds showed a consistent developmental gap between children's memory/inference of what someone wanted and what someone wrongly said or thought. Correct answers emerged with mastery of the false-belief task. It was concluded that the observed gap constrains de Villiers's linguistic determinism, which claims that acquisition of necessary grammatical structure for talking about the mind drives children's ability to think about the mind. (Author/KB)