Abstract: The present invention provides a portable, inexpensive, and easy to use apparatus capable of providing one or more types of social intervention (e.g., deterring, encouraging, etc.) to a person in an interactive manner, in order to influence (or to assist in influencing) one or more of that person's behavior(s), in a corresponding predetermined manner. Advantageously, the inventive interactive apparatus may provide encouraging social interaction to motivate a person to engage in one or more positive desirable behaviors (exercise, etc.), and/or provide deterring social interaction to discourage the person from engaging in one or more predetermined detrimental behaviors (such as overeating, eating large quantities of unhealthy foods, smoking, etc.). In one inventive embodiment, the novel interactive apparatus may be configured to provide encouraging messages to increase the likelihood of utilization of another helpful product or service, thereby enhancing the effectiveness thereof.