The subject used for this experiment to test Piaget's theory was an eight-year-old man named Nicolas. As Nicolas was eight years old, he was in the concrete operational phase. The experiment was conducted by a grade 12 student named Kavita. The results of the same experiments carried out by two psychology classes were also recorded and examined. These results contain data from children aged three to four and seven to eight years old. The classroom results of the experiment prove Piaget's theory that children aged seven to eight are able to successfully complete more tasks than children aged three to four. is correct. In all questions, children aged seven to eight had a higher percentage of correct answers than children aged three to four. This is due to Piaget's stage theory, which states that development occurs in stages based on approximate age. The subject was able to answer all the different questions correctly. This is because the subject was at the concrete operational stage. Piaget states that this child's thinking at the concrete operational stage revolves around what he can experience through his senses, what he has already learned and what is concrete (Grivas et al 1996 p 74). Therefore, the subject used these experiences and what he has already learned and applied them to the question. As noted previously, older children were more able to successfully answer the questions than younger children. There were no exact similarities in the results between the two stages but task 6 which tested the concept of classification showed that there was only a 5% difference between the two groups. The task that showed the most difference was task 3 which studied the concept of seriation with a difference ...... middle of paper ...... return their answers to them (Grivas etal 1996 p 79). could affect the experiment if the subject had already done the experiments before, so they were familiar with the experiments and perhaps already knew the correct answers. Another factor that may have affected the experiment was that the subject was in a classroom with an entire class watching him perform the experiments. Being observed and scrutinized may have made the subject feel uncomfortable and under pressure. Therefore, this might have affected the quality of his responses and his thought process. The classroom results prove that the hypothesis that children aged seven to eight are able to succeed and respond to more tasks than children aged three to four is correct. However, the results also prove that Piaget's stage theory and the concepts of classification and egocentrism are not entirely correct..