Aim: To test whether the methology used in Piaget's conservation experiments was the reason why children under 7 years mad erros, rather than any true lack of understanding in conservation.
Sample: 252 children (63 5yrs, 6yrs, 7yrs, 8yrs) - opportunity
Method:Lab experiment, snapshot - independent measures
IV:Type of questioning. age of children
DV:Number of errors made (how many times…