Persuasive speech aims to influence or change the attitudes and actions of the audience. It differs from informative speech in that persuasive speech tries to convince or "sell" an idea or choice, while informative speech simply provides information without pushing a specific option. There are four main types of persuasive speech: speech to convince and change attitudes, speech to motivate action, speech to inspire shared beliefs, and debates that discuss issues from multiple perspectives. Effective persuasion involves gaining the audience's attention, helping them understand the message, yielding to the idea, retaining it over time, and potentially altering their behavior.