... that infants develop their abilities at different rates; in regards to the ages they passed their milestones. It also shows that females were overall quicker in learning to speak which could be due socialisation, or cognitive processes. One of the most widely used measures of abilities is the Bayley scales (1st ed 1969, 2nd ed 1993) which has a number of tasks the child has to complete. For example, building a tower of 8 cubes, standing on the left and then the right foot. The Bayley scale is useful in assessing the mental development and physical abilities of the child. Fantz contributed towards measuring abilities of children in the form of recognition memory. Fantz (1958) created the looking chamber, where the infant was given pairs of visual patterns to look at, finding the child spends more time looking at a stimulus the haven't seen before. Piaget focussed on measuring the child's cognitive abilities ...

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