Four-year-olds are not completely egocentric and 5-year-olds can exhibit some understanding of conservation. this indicates that piaget may have underestimated the

“obamacare”: included a provision for government-run health insurance called “the public option.” was bitterly opposed by congressional republicans because most favored a “single-payer” plan. survived two challenges to its constitutionality. was partially repealed in 2013 in order to avert a government shutdown. led to the expansion of medicaid in republican controlled states.