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A four-year-old child is shown a row of seven red checkers. He is asked to place a black checker immediately above each red one. On doing so, the child agrees that there are as many red checkers as black checkers. The experimenter then spreads out the black checkers so that the line they form is longer than that formed by the red checkers. The experimenter asks whether there are more red checkers or more black checkers in order to determine whether the child:

Answer :

Final answer:

The experiment involves testing the child's understanding of the concept of conservation, a key cognitive ability that usually develops as children mature. The child is expected to understand that the number of checkers remains the same regardless of their arrangement or the length of the line they form.

Explanation:

The experiment you're referencing relates to cognitive development, specifically how children perceive quantity and conservation. In this case, the experimenters are testing the child's ability to understand that the quantity of checkers (seven) remains constant regardless of how they are arranged. This psychological concept is known as conservation.

Young children, such as the four-year-old in your example, often show a lack of understanding of conservation, believing that the length of the line of checkers indicates the number of checkers present. This is an important marker in cognitive development. As children mature and develop, they start to grasp that length, number, volume, etc., can remain the same despite changes in outward appearance or arrangement.

This particular experiment is a simplified version of those originally conducted by Swiss psychologist Jean Piaget regarding cognitive development in children. His studies laid the foundation for our understanding of how children's cognitive abilities develop over time.

Learn more about Cognitive Development here:

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