Consciousness development.

At the elementary organisms, and also plants ability to "answer" environment influence was generated, this form of reflexion is called as irritability. Irritability is characterised by certain selectivity — the elementary organism, a plant, animal adapts to environment. It is possible to name this stage of mentality touch. Through many millions years organisms have got ability of sensation, with which help the already more highly organised live being on the basis of the generated sense organs (hearing, sight, touch, etc.) Has got ability to reflect separate properties of objects — colour, form, temperature, etc. It has become possible because animals had a nervous system which has given the chance to make active relations with environment. It персептивная a development stage. The highest form of reflexion in fauna is the perception which allows to present object entirely. The mentality as result of interaction of a brain with an external world and mental activity have given the chance to animals not only to adapt to environment, but also in a certain measure to show internal activity in relation to it and even to change environment. The higher mammals already have an elementary thinking. So, for example, mental activity more difficult, than at other animals is inherent in monkeys. This stage of mentality name an intelligence stage. Having united all listed stages of mentality the person "has added" feelings, will, and on the basis of mechanical memory of animals at it logic, semantic memory develops, thus, all forms of mental reflexion at it have united in a single whole. This uniform, difficult, higher form of reflexion in evolution of the nature also is the consciousness.