Which psychologist advanced the theory that a "designed culture" based on positive reinforcement could encourage desirable behavior?

Based on Piagetian theory, which of the following relationships is NOT correct?

a. concrete operations--have attained conservation b. preoperational--animism c. formal operations--egocentrism d. sensorimotor--developing object permanence

A child's understanding of the nature of objects, their properties, and how they work is called ________

Fill in the blanks with correct word