Quite a thin piece this one. The interviewer at one point says: "Old-line psychologists such as Piaget thought that children didn't understand cause-and-effect

Quite a thin piece this one. The interviewer at one point says: "Old-line psychologists such as Piaget thought that children didn't understand cause-and-effect until they were well into their school years." I'd like to know where they think Piaget said such a brain-dead thing. Piaget described cause-and-effect manipulation behaviour in what he called the circular reaction phase in infants. (Baby cries, baby gets a result; baby cries again seemingly specifically to test whether it gets the same result).