ASAP HELP According to critics of Piaget's theory of cognitive development, why might a child not achieve a cognitive milestone such as conservation or object permanence at a specific age?

His short-term memory is full.
The information is too complex for his age.
He cannot pay attention long enough to learn it.
There was not an appropriate scaffold available.
The child did not think the information was important.

Ahigh school teacher wants to study the seating habits of students in the cafeteria to determine if students sit in the same seats or change seats from day to day. she sits in the cafeteria for several days, and without interacting with the students, records where they sit each day. what is a potential benefit of this type of research? there is an independent variable. there is a dependent variable. the researcher can gain personal information about an individual. the participants act normally. the information can be gathered over a period of several years.