At age 7, jenny's thinking became less intuitive and egocentric and more logical. jenny's cognitive ability reflects though

At age 7, Jenny's thinking became less intuitive and egocentric and more logical. jenny's cognitive ability reflects concrete operational thought.
 These thoughts appear in the concrete operational stage of  Piaget's theory of cognitive development, which occurs between the ages of 7 and 11.
At this stage children gain the abilities of conservation (number, area, volume, orientation) and reversibility.

United states v.  nixon, 418  u.s.  683 (1974),  was  a landmark  united states supreme court case  that resulted in a unanimous  decision  against president richard  nixon, ordering him to deliver tape recordings  and  other subpoenaed materials to a  federal  district  court.