... often manifested them selves as physical symptoms without physical causes. Freud believed that it was unconscious psychic forces that determine human personality and we have little self control or free will. Eminent behaviourist B.F. Skinner believed, like Freud that we flatter ourselves into thinking we are independent and able to freely will our own actions when in fact free will is an illusion and the mind (unconscious or otherwise) is not worth studying. Whilst Freud thought the cause of human behaviour is the unconscious mind, Skinner believed all human and animal behaviour can be explained by conditioning and the environment. Consequently rat's dogs and pigeons became a major source of research. When a species is presented with a stimulus you receive a predicted response. These responses can be observed and measured and human behaviour can be manipulated by providing a positive response to the required behaviour. Skinner believed human personality to ...

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