In line with the four types of written communication, presentations can be logically segregated into four distinct types, as shown in the following image:

Informational presentations exist for the purpose of sharing information, and nothing more. Examples include company performance declaration and the news on TV. Presenters are required to communicate slowly and clearly. The flow of information must be logical and sequential, and questions are accepted for further clarification.

Motivational presentations are a different bunch. They exist for the sole purpose of changing an audience's state of mind into doing something constructive. There are a number of motivational speakers touring the world—Anthony Robbins, Brian Tracy, and Robert Kiyosaki to name a few. In fact, you or your manager could be playing the role of a motivator in your organization. It requires the presenter to be passionate and reasonable about the chosen topic, and at the end of the presentation...