For hundreds of years philosophers speculated about "the mind" and in around the 1880's the popular method of psychology dealt only with the conscious mind. The experiments carried out at this time were criticised for their lack of objectivity and by the 1920's a new brand of psychology emerged in the form of behaviourism.
Psychology became a recognised discipline in around 1897 when Wilhelm Wundt started the first psychology lab in Germany. Wundt, along with others, attempted to investigate the mind through introspection, and observed their own conscious mental processes. While analysing their thoughts, images and feelings, they recorded and measured their results under controlled conditions and aimed to sort conscious thought into its basic elements as a chemist would with a chemical compound. This theory was known as structuralism.
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