Answer: Aaron's problem stem from centration
Step-by-step explanation:
Centration occurs when a child focuses on one aspect of what they are dealing with and neglect other probable aspect of that situation.
This occurs in the preoperational stage where the child is not able to think logically or separate different ideas about certain situations.
Piaget suggest that because the child may be too focused on themselves and they can not think systematically(egocentrism) this may cause centration.
The child at this age is not able to decenter , to think about various apsect of a situation simultaneously
Aaron is not able to distinguish that the reason 8 sweets look like they are many of them is because they have been spaced far apart , he still can't record that in his mind the only thing he is able to think about is they look too many in his eyes.