"Experimental Designs for Developing Multi-Component Interventions: on Factorial Designs, SMARTs and MRTs"
Behavioral interventions often include multiple components. A variety of experimental designs can be used to inform the construction of multi-component behavioral interventions. These include factorial designs, sequential multiple assignment randomized trials (SMART), and micro-randomized trials (MRT). This presentation is a non-technical introduction to multi-component interventions, including fixed interventions, adaptive interventions, and just-in-time adaptive interventions (JITAI). An organizing framework will be presented to help scientists select an experimental approach to inform intervention development. The connection between several experimental approaches will be discussed and a variety of case studies will be used for illustration.