The designer of the training program needs to understand each
of the methods and the delivery system to determine the best method
for meeting training objectives, given the organizational constraints.
Instructional methods differ in their ability to influence knowledge, skills
and attitudes, so the training designer must be able to evaluate a method’s
strengths and weaknesses to make good decisions about its use. Although
the method’s effectiveness in meeting the learning objective should be the
major criterion for selection, other consideration are costs, time needed to
develop material, and the time allotted for training session.