Review the term “lateralization.” Compare lateralization in infancy and early childhood with that of late adults. Hint: go to cognitive development in late adulthood. The brain is often described as plastic. Why? According to Dynamic Systems Theory, perception and action are linked. What does this mean? Provide an example. A researcher is interested in an infant’s understanding of numbers. She places two dancing balls within the infant’s line of sight, covers them, and then removes the cover to expose the two dancing balls again. After this procedure is repeated several times the infant loses interest and looks away. The researcher has timed the “looking” behavior. The researcher then removes the cover and there appear three dancing balls or one instead of two. The infant suddenly becomes interested again and looks longer. The process of more or less looking time is called ____________ and ___________ respectively.