Behaviourism = the philosophy that a mental state is a disposition to behave a certain way. I am not a fan of behaviourism directly, but I have just come to realise that Behaviourism is the most accurate philosophy of the mind in terms of evolution. I mean, when u consider that evolution can only select organisms based on their phenotypes, that is, the way they work, and the way they behave, it seems like that Behaviourist philosophy of the mind is the only way that Evolution can select for one mind over another. The mind which causes certain behaviours over other behaviours is selectable. The mind which 'thinks' a lot, or 'feels' a lot, but suppresses its behaviours or whatever, is unknown to Evolution. Evolution cannot select minds. It can only select behaviours.