... influenced by associations and preferences" (Schiffman 1996). This essay will discuss the ways in which humans are able to see colour taking into account both the physiological and psychological factors as well as the dominant theories on colour perception. Let us begin first with the nature and function of having colour in ones world. Without the ability to see colour many surfaces such as textures and patterns as well as textiles and even the object itself would go unnoticed. So colour can be seen as a biological advantage to humans and other colour seeing animals. Along with using it for object identification "primitive man must have used colour to tell him about his crops, to help him judge the fertility of the soil and to make his weather forecast from the colour of the sunset"(Wright 1967). In fact there are several professions today that require people to have normal colour ...

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