Based on Primate Cognitive Test battery, designed to differentiate cognitive skills into physical and social domains, the average human child two and half years old has approximately the same cognitive capability regarding physical objects and environment as adult great apes chimpanzee, gorilla and orangutan. But the same child would vastly outperform adult great apes in social cognitive skills.
Furthermore, while different primates groups, such as great apes and lemurs, show considerably different levels of physical cognitive capabilities, they all have similar social cognitive capabilities. humans are the lone exception with outsized social cognitive capability from toddler stage.
Furthermore, while different primates groups, such as great apes and lemurs, show considerably different levels of physical cognitive capabilities, they all have similar social cognitive capabilities. humans are the lone exception with outsized social cognitive capability from toddler stage.