What types of intervention components might be investigated via an MRT?


The repeated randomizations in an MRT are appropriate for investigating the effects of time-varying intervention components for which the proximal effect might vary by time or current context of the individual. For example, instead of sending a reminder instructing individuals to self-monitor what they eat every day, it might be more effective and less burdensome to remind a person to self-monitor only when they have not recently self-monitored. Another example would be the delivery of a relaxation exercise via a mobile phone. A researcher might want to know in what contexts delivering the relaxation exercise is most effective, for example, whether delivering a relaxation exercise versus no delivery is more effective at times when the individual is stressed.



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