Answer to Question 1
The Delphi technique has the advantage of not requiring group members who may be scattered around the country or the globe to meet face to face. Its principal disadvantages are that it can be time consuming, and it does not allow for group interaction. It also depends on the cooperation of the experts to respond promptly to the questionnaires and take the time needed to complete them carefully.
Answer to Question 2
Groups pass through five stages. (1 ) Forming occurs when group members get acquainted and establish ground rules. (2 ) Storming happens when there is a high degree of conflict, and members resist the leader's control. (3 ) In the norming phase, the group becomes cohesive, group identity builds, and there are shared feelings of common interests and goals. (4 ) In the performing stage, the group is ready to work. (5 ) Adjourning signifies that goals have been met, so the group disbands.