At this age children are good abstract thinkers. They express their feelings and ideas in complex ways, both in everyday interactions and through pretend play. If you hand them the wrong toy, they may say "No want that!" or they might express mixed feelings about a new sibling by sending a baby doll back to the "hospital." Children at this age start to create stories that make logical sense. Their imaginations are so developed at this point that they can substitute symbols for real objects.