This article seeks to shed more light on the well-studied, yet still challenging, dative alternation. It starts from the cognitive-typological suggestion of Croft (2001, 2003) that language-internal variation is subject to the same constraints as cross-linguistic variation (the semantic map model), and that careful language-specific research may therefore reveal facts about language in general. I argue that there is a parallel between dativisability and passivisability. Then, using a sample of active tokens from the British National Corpus of ditransitive give in both the indirect-object and double-object constructions and comparing these to a matched sample of passive examples, I evaluate the effect on passivisability — and hence dativisab...