It is argued that Binding Theory (BT) must recognize two types of covaluation: the familiar type, which holds between two NPs when they have the same semantic value, and a new type, which holds between two NPs when one of them denotes an attitude holder and the other the ‘self’ of the attitude holder. This is shown to account for the acceptability of ‘de re’ reflexive pronouns and unacceptability of some ‘de re’ non-reflexive pronouns. Alternative theories, which attempt to preserve the standard BT, are also discussed.