Representation of objects and events: Why do infants look so smart and toddlers look so dumb?

Research has demonstrated that very young infants can discriminate between visual events that are physically impossible versus possible. These findings suggest that infants have knowledg of physical laws concerning solidity and continuity. However, research with 2-year-olds has shown cannot solve simple problems involving search for hidden object, even though these probems require the smae knowledge. These apparently inconsistent findings raise questions about the interpretation of both data sets. This discrepancy may be resolved by examining differences in task demands.