Question 24 2 pts Follow-up research reveals that Piaget preschoolers O underestimated; magical thinking overestimated; animistic beliefs overestimated: abstract thinking O underestimated; egocentrism Question 12 2 pts In developing countries, diarrhea O leads to an estimated 2 million childhood deaths each year O results from unsafe water and contaminated foods O is less prevalent than in industrialized nations O has been linked to a mercury-based preservative in vaccines