<em>The concrete-operational stage </em><em>is described as the third stage in the 'cognitive development theory' which was introduced by Jean Piaget. The given period starts with the age of seven and last till eleven years of age i.e, in the middle childhood and is distinguished by a child's development of 'logical thought' or 'reasoning' related to the real-life situations in the absence of any changes in the appearances.</em>
<em>A concrete-operational thinker</em><em> is a person who falls under the third stage of cognitive development.</em>
<em>Piaget would suggest that Deena has recently become a concrete-operational thinker.</em>
The terms containment, massive retaliation, and détente are most closely associated with US foreign policy efforts to do what? Pursue involvement in the Cold War from the 1950s to the 1970s. Which event is most closely associated with the END of the Cold War? Tearing down the Berlin Wall.