Getting children to cut back on sugar-sweetened beverages like soda and energy drinks has been the goal of anti-obesity public service advertisements. A new study evaluates the effectiveness of persuasive techniques -- humor, fear and nurturance -- used in those PSAs.
![Soda bottles](https://cdn.annenbergpublicpolicycenter.org/wp-content/uploads/2018/03/1500901_sodabottles-360x144.jpg)