Invoking Reciprocity In Your Presentation

At the end of your presentation, you will have a call to action and you will be asking people to do something. If you can incur a debt before that, then they will be more like to say yes to your call to action.

Since the size of the indebtedness doesn’t matter, you can give something small. You can offer to communicate by email with anyone who has more questions (a gift of your time). If this is a sales presentation, you can offer a free trial of your product. If your presentation is useful, informative, or entertaining, then you have just given them a gift of your time, expertise, and knowledge. That will also be enough to incur indebtedness.