Final answer:
According to Piaget's theory of prejudice development, José is displaying egocentrism.
Step-by-step explanation:
Egocentrism is a cognitive phenomenon observed in the preoperational stage of development, typically occurring in children aged 2 to 7 years. During this stage, children tend to be self-centered and have difficulty understanding that others may have different perspectives, needs, or desires.
In José's case, when choosing a playmate based solely on his own needs and wants, he is demonstrating a lack of consideration for the desires and perspectives of others. This egocentric behavior is characteristic of young children who have not yet fully developed the cognitive abilities to take into account the viewpoints of others. As children progress through Piaget's stages of development, they gradually become less egocentric and more capable of understanding and considering the perspectives and needs of others, eventually reaching a stage of concrete operational thinking where they can engage in more reciprocal and empathetic interactions.