
Integrating human-delivered and digital interventions.
Advances in mobile and wireless technologies offer tremendous opportunities for extending the reach of psychological interventions and adapting interventions to the unique and changing needs of individuals.
Human delivery is essential to engagement, but it is both expensive and burdensome.
The integration of digital and human-delivered components is critical to building effective and scalable interventions.

Intervention Design
Multimodal Adaptive Interventions
A Multimodal Adaptive Intervention (MADIs) is an intervention design that guides the provision of a combination of services that are sequenced and adapted by different modalities (e.g., human delivered, digital) on different time scales.
Slow
Every few weeks or months
* Standard adaptive interventions operate on this timescale
Fast
Every few days or hours
* Just-in-time adaptive interventions operate on this timescale


Trial Design
Optimizing MADIs with Hybrid Experimental Designs
Hybrid Experimental Designs (HED) can be used to answer scientific questions about the integration of human-delivered and digital components and their adaptation at multiple timescales.
Hybrid designs like the Hybrid SMART-MRT are used to construct Multimodal Adaptive Interventions (MADI).
Hybrid designs like the Hybrid SMART-MRT are used to construct Multimodal Adaptive Interventions (MADI).