Sometimes one must evaluate a group leader's ability to encourage critical thinking. what will such evaluation accomplish for a group?

It is possible to evaluate a group leader's ability by means of the "trait approach" which states that leaders have certain traits or patterns of behaviors and thoughts which distinguish them from the group. The evaluation will demonstrate the leaders' personality characteristics (such as; enthusiasm, verbal facility, creativity, temperament, and expertise) who will be influential among the members of the group. Besides, the evaluation results will help find out effective communicator leaders who enhance critical thinking attitudes among the group members, help clarify the members' doubts and motivate the group to achieve its goals.

the speech this question is referring to is president kennedy's special message to the congress on urgent national needs, may 25, 1961

kennedy responds in a very direct and concrete way to those thinking that communism is a positive system:

"yet their aggression is more often concealed than open. they have fired no missiles; and their troops are seldom seen. they send arms, agitators, aid, technicians and propaganda to every troubled area. but where fighting is required, it is usually done by others--by guerrillas striking at night, by assassins striking alone--assassins who have taken the lives of four thousand civil officers in the last twelve months in vietnam alone--by subversives and saboteurs and insurrectionists, who in some cases control whole areas inside of independent nations." (kennedy)

president kennedy presents communism as cowardly, as a hidden and treacherous weapon that strikes from the shadows like thieves, he represents the system as not even being capable of showing and open and overt attack or confrontation. to finish up the response, he expresses that the system attacks even a country's idependence and freedom.