rawling and watching' as cited in Moonie, N, (1995). A child does not understand that an object does not cease to exist when it is out of sight. However, in contradiction, Bower & Wishart, (1972), used infrared cameras to see what the child does when an object disappears. The child is shown a bottle in the light, when the child reaches to grasp the bottle the lights are turned out. Bower & Wishart recorded that the child continued to reach for the bottle for up to 1.5minutes after the lights are turned out. Another point made by Piaget is that not only does the child look for an object, which is hidden, but also the child will not look for it even if part of it is showing. The object must be fully visible for the child to look for it. Between the ages 6-7 months the child will recognise a partly visible object and by 8 months the child will look for an object that is totally hidden, (all ages are approximate, although Piaget believed children went through the same stages, he concluded that they don't necessarily do so at the exactly the same age). This realization that an object still exists even when out of view is called, 'Object Permanence'.
             The Pre-operational Stage, (2-7 years): - Later in the sensorimeter stage the child will begin to develop the use of language and thought, this is one of the main continuing developments in the pre-operational stage. This stage derives the title of pre-operational because the child has yet to develop its logical thinking and the ability to understand how things operate. Piaget went on to divide the pre-operational stage into two parts, the first being, 'Pre-Conceptual', from the ages 2-4 the child has no concept of varying differences at this stage everything is either all the same colour, size etc. For example a child a child is given 5 large red bricks and 5 small red bricks, the child is then asked to sort the large red bricks from the small red bricks, the c...