This paper explores R. W. Sperry's view that consciousness is ?causally? effective in directing voluntary human behaviour. This view, formulated in the course of his split brain research, presupposes an earlier theory that motor behaviour is the sole output of the brain and that mental phenomena were developed for regulation of overt response. His view of the ?causal? effectiveness of consciousness is shown to be based on a theory of emergent properties like that of Bunge. It is also shown that (...) Sperry, like Bunge, is a materialist; appearances to the contrary are due to occasional use of standard terms such as ?materialism? and ?interaction? in unusual senses. It is argued, with specific reference to Chisholm and Searle, that Sperry's hypothesis is helpful towards elucidating the structure and dynamics of action. It is also argued that it is not, as Sperry thinks, a consequence of his position that moral values are part of brain science. (shrink)

As it is appropriate to regard mental events as properties of their subject rather than as entities, so it is appropriate to treat actions as properties of the agent rather than as particulars. It is argued that the property approach to action should not be rejected because of the implausibility of the theories of Goldman and Kim; for properties need not and should not be individuated in their way. It is also argued that the question of treating actions as particulars (...) or properties is to be settled on pragnatic grounds: it has no clear metaphysical significance. Finally it is argued that the logical form of action sentences, which Davidson endeavours to display by treating acts as particulars, can be shown with greater simplicity and plausibility on a property approach. (shrink)