Donny's Mother Has Just Poured Glasses of Orange Juice for Donny

Multiple Choice

Donny's mother has just poured glasses of orange juice for Donny and his sister Maddie. After they are poured, Donny becomes very upset that he got less juice than his sister. Their mother points out that while Donny's glass is short it is also wider and thus both children have the same amount. Donny continues to protest, arguing that his juice is shorter thus he has less juice. According to Piaget, what would explain Donny's behaviour?

A) animism
B) centration
C) intonation
D) a primary circular reaction