Abstract
It is commonly assumed that the non-cognitivists of the first half of the twentieth century - the emotivists – were internalists about moral motivation. It is also commonly assumed that they were prompted to choose emotivism over other cognitivist positions in ethics because of their commitment to internalism. Finally, it is also commonly assumed that they used an internalist argument to argue for emotivism.
In this article I argue that the connection between emotivism and internalism is far more tenuous than is commonly assumed. I focus on two of the most important and influential emotivists: A. J. Ayer and Charles L. Stevenson. While it is true that Stevenson was an internalist, Ayer refused to endorse internalism. Neither of them was originally prompted to choose emotivism over cognitivist positions in ethics by internalist considerations. Finally, Ayer never used an internalist argument to argue for emotivism; Stevenson did once borrow an internalist argument from another philosopher in order to argue for emotivism, but he later abandoned it.