Motivational interviewing (MI) is a therapeutic approach that aims to influence behavior by eliciting goals, motivation, insights, and specific behavioral plans through structured dialog. It's largely associated with William Miller and Stephen Rollnick, and bears some relation to the Socratic method (as does the original cognitive therapy approach). While originally developed as part of a treatment for substance abuse, the method has been generalized and found empirical support in assisting behavior change in diet, exercise, and other areas.
Social benchmarking refers to comparing a person's behavior, trends, or status to others. Often, merely providing data on others can change behavior by leveraging social norms.
For example, letters comparing homeowners' use of electricity with peers were found to significantly reduce the amount of energy used by high-consumption households compared to non-comparison messages.
Feedback entails providing qualitative or quantitative information about a behavior's performance or consequences.
Performative information might include data on how a person's current diet tracks with nutrition recommendations or how their home power consumption compares with nearby households.
Feedback on outcomes may include information about relative cancer risk based on current lifestyle factors or calculated net worth in 20 years based on the person's current savings rate and investment returns.
Automation refers to having another person, group, or technology system perform part or all of the intended behavior.
A prominent example is Thaler & Bernartzi's Save More Tomorrow intervention, which invested a portion of employees' earnings into retirement funds automatically and even increased the contribution level to scale with pay raises. Other examples include automatically scheduling medical appointments so the patient needn't do it themselves and mailing healthy recipe ingredients to the person's home to reduce the burden of shopping.
Defaults refer to what happens if a person makes no choice or goes with a pre-selected choice. The influence of defaults is a foundational component of behavioral economics.
Perhaps the most famous example of defaults is the difference between opt-in and opt-out organ donation programs. While not universal, several studies have found that the rate of organ donation consent in a population seems to be influenced by the default (i.e., what happens if a person does not check a box or change the pre-selected preference on a form).
Smart defaults do not only refer to one-off events, however. In the well-known Save More Tomorrow program, participants were not only included in a savings program by default, but the amount they saved was also changed over time automatically (again by default). Similarly, other behavior change programs have default settings that include at-home medication or food delivery, rules-based reminders on different platforms, etc.
Financial incentives are monetary rewards given for performing a certain behavior. These come in many different varieties; for example, they may be guaranteed vs lottery-based, or group-oriented vs individually-assigned.
Cognitive behavioral therapy (CBT) is a therapuetic approach to improving mental and behavioral health. The core philosophy is that behavior can be modified by noticing and correcting patterns in thought that influence the behavior. Modern CBT is typically associated with Albert Ellis and Alan Beck.
The structured and rules-based nature of CBT have made it a popular candidate for digital interventions and application by lightly-trained or even untrained practitioners.
Random screening refers to unannounced checks of whether someone has been compliant with a given behavior.
These are frequently used via biomarkers, e.g. testing if someone has been taking recreational drugs by delivering a urine test.
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